can't move a tab while it (or any other tab) is loading




a year ago
a year ago


(Reporter: steve.chessin, Unassigned)


53 Branch

Firefox Tracking Flags

(Not tracked)




a year ago
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:53.0) Gecko/20100101 Firefox/53.0
Build ID: 20170504105526

Steps to reproduce:

Pick a web page, any web page.
Pick a link in that page, any link.
Right-click (control-click) on the link and select "Open Link in New Tab".
Left-click on the new tab and try to move it while it's loading.

Actual results:

The tab doesn't move while it (or any other tab) is loading. Once all tabs have completed loading, you can move it.

Expected results:

The tab should have moved with the mouse. I note that prior to FF 53 (or was it prior to FF 52?), one could move tabs while they loaded.
Component: Untriaged → Tabbed Browser

Comment 1

a year ago
I can't reproduce it with FF53 on Win 7.

Is it reproducible:
1) in safe mode:

2) with a fresh profile:
Flags: needinfo?(steve.chessin)

Comment 2

a year ago
(In reply to Loic from comment #1)
> I can't reproduce it with FF53 on Win 7.
> Is it reproducible:
> 1) in safe mode:
> mode


> 2) with a fresh profile:
> firefox-profiles?cache=no

I haven't tried this yet. Given that it doesn't happen in safe mode, is this worth doing?
Flags: needinfo?(steve.chessin)

Comment 3

a year ago
If it works in safe mode, it works probably with a new profile too.
That said, your issue could be related to a faulty add-on.

You can disable your add-ons one by one to find the culprit.

Comment 4

a year ago
The behavior continues with FF 53.0.3. It's not that the tab won't move; it's that its movement often lags the mouse. I click on the tab and slide the mouse over to where I want the tab and release the mouse button. A few seconds later I get the "thumbnail" image of the tab and it pops to where I released the mouse. At least sometimes that happens. Sometimes nothing seems to happen.
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