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I have a problem with Firefox Beta 52. It doesn't happen on Firefox ESR 45. Sometimes when I try to drag tab, it doesn't move. It happens unpredictably, however, I noticed one specific scenario when it happens 1. Open https://mozdevs.github.io/MediaRecorder-examples/record-live-audio.html , allow to use the microphone 2. Install https://addons.mozilla.org/en-US/firefox/addon/devedition-theme-enabler/ , enable developer theme 3. Place mouse directly above the microphone favicon in the tab, hold left mouse button, move mouse horizontally Result: Tab doesn't move Expected: Tab should move
I see an issue when drag the webrtcIndicator (Firefox icon) above tabs bar, the moving / focus is sometimes paused. on Fx52.0 & Fx53.0b1, with/without DevEdition theme. Also occurred in Fx45.8.0esr. I did not see the problem when dragging tab with "allow to use the microphone", and don't understand the "microphone favicon in the tab".
Created attachment 8845897 [details] bug 1345683 microphone favicon in the tab, by reporter.png Is it clear from attached screenshot what "microphone favicon in the tab" meant? If you don't like the wording, please suggest a better description Can you reproduce this regression now?
Only appear when the tab is in background.
I'm dragging tab, not sharing icon. Mozregression-gui generated this regression range: https://hg.mozilla.org/integration/fx-team/pushloghtml?fromchange=ee2eba8cdedda9ec12caa8aa4903a525df1aaf2f&tochange=e077a9ed54589316850312a6c4460ef15472109d -> 1275262 – implement device sharing animation on background tabs https://bugzilla.mozilla.org/show_bug.cgi?id=1275262
I can only reproduce when using the compact theme. Dão, do you happen to know if the compact theme does something different related to dragging tabs?
(In reply to Florian Quèze [:florian] [:flo] from comment #5) > I can only reproduce when using the compact theme. Dão, do you happen to > know if the compact theme does something different related to dragging tabs? http://searchfox.org/mozilla-central/rev/624d25b2980cf5f83452b040e6d664460f9b7ec5/browser/themes/shared/compacttheme.inc.css#275-279
(In reply to Dão Gottwald [::dao] from comment #6) > (In reply to Florian Quèze [:florian] [:flo] from comment #5) > > I can only reproduce when using the compact theme. Dão, do you happen to > > know if the compact theme does something different related to dragging tabs? > > http://searchfox.org/mozilla-central/rev/ > 624d25b2980cf5f83452b040e6d664460f9b7ec5/browser/themes/shared/compacttheme. > inc.css#275-279 I guess based on this that we'd need to reset pointer-events to none for the sharing icon or something? The same might be true for other things which shouldn't be draggable.