1682167 - Occasionally cannot drag/drop add-ons in "Customize" or drag/drop tabs to reorder them

Status: RESOLVED WORKSFORME

(Core :: Widget: Gtk, defect)

Description

[Lyubomir [:mystiquewolf]]

Attachment: Screencast_13.12.2020_14:13:08.webm

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:85.0) Gecko/20100101 Firefox/85.0

Steps to reproduce:

Try to move an addon

Actual results:

Cannot move the add-ons - cannot drop them and they are not shown while i move the cursor to drag them.

Expected results:

Should've been able to move the add-ons.
I'm using MOZ_ENABLE_WAYLAND and Fission on Ubuntu.

Comment 1

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

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Comment 2

[Lyubomir [:mystiquewolf]]

Attachment: Troubleshooting info

Comment 3

[Tomislav Jovanovic :zombie]

Looks like customization issue.

Comment 4

[:Gijs (he/him)]

Does it work on a clean profile without enabling fission / wayland?

Does it work on your main profile if you use the context menu to move items between the toolbar and the overflow menu?

Can you move non-add-on items (e.g. the builtin "save page" button) with drag/drop?

Do other drag/drop operations work?

Comment 5

[Lyubomir [:mystiquewolf]]

I'm not sure what changed, but i'm with build 20201214091023 and it seems to work now.

Comment 6

[Lyubomir [:mystiquewolf]]

Actually now it happened again. It seems to happen just sometimes. I've noticed that i couldn't move the tab/tabs to different positions, and remembered that I've recently experienced this a couple of times. I immediately thought that most probably the issue with not being able to move the add-ons should be the same - and it is! I tried to reproduce the issue immediately and it appeared like in the video - the add-ons couldn't be dropped and while they were being dragged they became invisible. Also when i drop them they again stay invisible and a hole is left in their old position. Other add-ons than the dragged one doesn't reflect that an add-on is dragged on top of them.

So i hit ESC to exit the Customize screen, tried to move the tab again and this time it responded just like usual. I really have no idea what might be triggering it. Do you still want me to try and disable Fission and Wayland?

Comment 7

[:Gijs (he/him)]

(In reply to Lyubomir from comment #6)

So i hit ESC to exit the Customize screen, tried to move the tab again and this time it responded just like usual. I really have no idea what might be triggering it. Do you still want me to try and disable Fission and Wayland?

I think esp. disabling wayland would be interesting.

But given that this isssue is breaking both tab drag/drop and toolbar drag/drop, I imagine there's a low-level issue, so moving over to Core to get some eyes on it there...

Comment 8

[Marco Castelluccio [:marco]]

Do you still see this bug?

Comment 9

[Lyubomir [:mystiquewolf]]

I guess not, it's been 3 years and now i'm not on Gnome anymore.