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Q&A Pressing Enter in the Edit Comment box inserts a link instead of submitting

Thank you for identifying a cause of []() being automatically added to posts. This being unexpectedly added to posts has been noticed before. I can't find a reference to it at present, and a cause ...

posted 9mo ago by trichoplax‭ · edited 9mo ago by trichoplax‭

Answer

#4: Post edited by

trichoplax‭ · 2026-01-05T02:54:42Z (9 months ago)
Link to Oleg's comment that shows the previous investigation

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Thank you for identifying a cause of `[]()` being automatically added to posts. This being unexpectedly added to posts has been noticed before (although I can't find a reference to it at present, and a cause was never identified).
For anyone attempting to reproduce this while working on a fix, note that it is easy to miss because the user action taken is in the Edit Comment box (as described), but the Body field may be off screen if the post preview is longer than fits on one screen. I've used this question as an example which is short enough to just fit on the screen, so the Edit Comment box can be seen, and each time I press Enter (in the Edit Comment box) another `[]()` appears at the end of the Body field:
<details>
<summary>
Animated screen recording
</summary>
![A post Body field with the text of the question, and empty Markdown links appearing at the end of it](https://meta.codidact.com/uploads/7t0zyadtm7pnjgxoh209rpybyy2d)
</details>

Thank you for identifying a cause of `[]()` being automatically added to posts. This being unexpectedly added to posts has been noticed before. ~~I can't find a reference to it at present, and a cause was never identified~~ See [Oleg's comment that found the previous investigation I'd overlooked](https://meta.codidact.com/comments/thread/11419#comment-28261).
For anyone attempting to reproduce this while working on a fix, note that it is easy to miss because the user action taken is in the Edit Comment box (as described), but the Body field may be off screen if the post preview is longer than fits on one screen. I've used this question as an example which is short enough to just fit on the screen, so the Edit Comment box can be seen, and each time I press Enter (in the Edit Comment box) another `[]()` appears at the end of the Body field:
<details>
<summary>
Animated screen recording
</summary>
![A post Body field with the text of the question, and empty Markdown links appearing at the end of it](https://meta.codidact.com/uploads/7t0zyadtm7pnjgxoh209rpybyy2d)
</details>

#3: Post edited by

trichoplax‭ · 2026-01-04T00:45:53Z (9 months ago)
Hide video inside details section to avoid distraction

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Thank you for identifying a cause of `[]()` being automatically added to posts. This being unexpectedly added to posts has been noticed before (although I can't find a reference to it at present, and a cause was never identified).
For anyone attempting to reproduce this while working on a fix, note that it is easy to miss because the user action taken is in the Edit Comment box (as described), but the Body field may be off screen if the post preview is longer than fits on one screen. I've used this question as an example which is short enough to just fit on the screen, so the Edit Comment box can be seen, and each time I press Enter (in the Edit Comment box) another `[]()` appears at the end of the Body field:
~~> ![A post Body field with the text of the question, and empty Markdown links appearing at the end of it](https://meta.codidact.com/uploads/7t0zyadtm7pnjgxoh209rpybyy2d)~~

Thank you for identifying a cause of `[]()` being automatically added to posts. This being unexpectedly added to posts has been noticed before (although I can't find a reference to it at present, and a cause was never identified).
For anyone attempting to reproduce this while working on a fix, note that it is easy to miss because the user action taken is in the Edit Comment box (as described), but the Body field may be off screen if the post preview is longer than fits on one screen. I've used this question as an example which is short enough to just fit on the screen, so the Edit Comment box can be seen, and each time I press Enter (in the Edit Comment box) another `[]()` appears at the end of the Body field:
<details>
<summary>
Animated screen recording
</summary>
![A post Body field with the text of the question, and empty Markdown links appearing at the end of it](https://meta.codidact.com/uploads/7t0zyadtm7pnjgxoh209rpybyy2d)
</details>

#2: Post edited by

trichoplax‭ · 2026-01-04T00:40:37Z (9 months ago)
Make explicit that a cause was not previously identified

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~~Thank you for identifying a cause of `[]()` being automatically added to posts. This being unexpectedly added to posts has been noticed before (although I can't find a reference to it at present).~~
For anyone attempting to reproduce this while working on a fix, note that it is easy to miss because the user action taken is in the Edit Comment box (as described), but the Body field may be off screen if the post preview is longer than fits on one screen. I've used this question as an example which is short enough to just fit on the screen, so the Edit Comment box can be seen, and each time I press Enter (in the Edit Comment box) another `[]()` appears at the end of the Body field:
> ![A post Body field with the text of the question, and empty Markdown links appearing at the end of it](https://meta.codidact.com/uploads/7t0zyadtm7pnjgxoh209rpybyy2d)

Thank you for identifying a cause of `[]()` being automatically added to posts. This being unexpectedly added to posts has been noticed before (although I can't find a reference to it at present, and a cause was never identified).
For anyone attempting to reproduce this while working on a fix, note that it is easy to miss because the user action taken is in the Edit Comment box (as described), but the Body field may be off screen if the post preview is longer than fits on one screen. I've used this question as an example which is short enough to just fit on the screen, so the Edit Comment box can be seen, and each time I press Enter (in the Edit Comment box) another `[]()` appears at the end of the Body field:
> ![A post Body field with the text of the question, and empty Markdown links appearing at the end of it](https://meta.codidact.com/uploads/7t0zyadtm7pnjgxoh209rpybyy2d)

#1: Initial revision by

trichoplax‭ · 2026-01-04T00:39:34Z (9 months ago)

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Thank you for identifying a cause of `[]()` being automatically added to posts. This being unexpectedly added to posts has been noticed before (although I can't find a reference to it at present).

For anyone attempting to reproduce this while working on a fix, note that it is easy to miss because the user action taken is in the Edit Comment box (as described), but the Body field may be off screen if the post preview is longer than fits on one screen. I've used this question as an example which is short enough to just fit on the screen, so the Edit Comment box can be seen, and each time I press Enter (in the Edit Comment box) another `[]()` appears at the end of the Body field:

> ![A post Body field with the text of the question, and empty Markdown links appearing at the end of it](https://meta.codidact.com/uploads/7t0zyadtm7pnjgxoh209rpybyy2d)

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