1755110 - Developer Tools | Network tab | Hovering over item causes Type to disappear

Status: UNCONFIRMED

(Core :: Graphics, defect, P3)

Description

[irahsu]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:98.0) Gecko/20100101 Firefox/98.0

Steps to reproduce:

1. Start Firefox and open the Developer Tools.
2. Click on the Network tab.
3. Reload the current page.
4. Hover over the "File" column for one of the items that are listed.

Actual results:

The value in the "Type" column (e.g., "jpeg") disappears! For instance "jpeg" becomes blank, and nothing is shown in that column. Hover over another item's File column, and that item's Type value also disappears. It seems to happen when the tooltip for the file appears.

Expected results:

The Type value should remain visible.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'DevTools::Netmonitor' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 2

[Julian Descottes [:jdescottes]]

Thanks for filing, we couldn't reproduce the issue so far.
Can you share the report from about:support for your browser? Thanks!

Comment 3

[irahsu]

Attachment: about:support text

Comment 4

[irahsu]

More specific steps to reproduce:

1. Go to a page with embedded images, such as: https://www.mozilla.org/en-US/
2. Press F12 to open dev tools
3. Go to Network tab
4. Click gear icon and turn on Persist Logs
5. Reload the page ("Disable Cache" should be off)
6. Scroll down on the items to the newly-loaded ones where all the cached items appear
7. Hover over the "File" column of one of the "svg" or "png" items. When the tooltip for the full URL of the item appears, the "Type" value for that one item disappears.

Comment 5

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:Honza, could you have a look please?

For more information, please visit auto_nag documentation.

Comment 6

[Jan Honza Odvarko [:Honza] (always need-info? me)]

I tested this on Win10 and Ubuntu (also in DevEdition and Nightly channels) and I can't reproduce the problem.

Could you please try to reproduce the issue in Firefox Nightly?
In a new fresh profile?

Download:
https://www.mozilla.org/en-US/firefox/channel/desktop/

Thank you

Comment 7

[irahsu]

Sorry so late on this, but I just downloaded and installed Nightly and am on a fresh profile. When I first run Firefox Nightly and go to https://www.mozilla.org/en-US/, open the Dev Tools, Network tab, do a hard reload, and hover over a File column item that is an image, the text tooltip pops up, but the image preview does not, and the value in the Type column disappears. If I try it again by reloading the page, then the image preview functionality seems to kick in, and the value in the Type column stops disappearing.

Comment 8

[Julian Descottes [:jdescottes]]

This sounds like a graphics issue, but we are unable to reproduce so far. I don't see anything suspicious in the about:support logs for now. Setting P3/S3, don't hesitate to share more information (and screenshots) if you experience other graphical issues with Firefox, this could help narrow the source of the problem.

Comment 9

[Jan Honza Odvarko [:Honza] (always need-info? me)]

Moving to Graphic component to get more diagnoses.
Please, feel free to move it back in case it isn't the right target component.