1325969 - Font changes spontaneously

Status: RESOLVED INCOMPLETE

(Thunderbird :: Message Compose Window, defect)

Description

[Brooke Jennings]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0
Build ID: 20161208153507

Steps to reproduce:

Compose email


Actual results:

Occasionally while composing, the font changes, in size and style.  This happens spontaneoulsy, without any input from me.  Sometimes, after remaining in the new font for a while, it will revert to the font I was using before the the font changed.

I'm not sure I understand the Version menu.  I am using v 45.5.1 (x86)


Expected results:

The font should have remained as I had set it.

Comment 1

[Wayne Mery (:wsmwk)]

dupe?

Comment 2

[Jorg K (CEST = GMT+2)]

I don't think the font is changing "spontaneously". You must be clicking somewhere and you pick up the font at the cursor.

See for example bug 1319907, which I duped to bug 1270803. Worth reading:
Bug 1270803 comment #1.

Comment 3

[Jorg K (CEST = GMT+2)]

Reopened, since the reporter wrote in bug 1270803 comment 8:
===
Font size and style have changed while I am typing, without clicking anything.  I have been just happily typing along, and abruptly the size AND style of the font have changed simultaneously.  And then, after a while, it may spontaneously return to the original font.

If this is controled by Mozilla core software, I wonder if my program has been corrupted.  If so, might removing and reloading the Thunderbird program fix it?  Although this doesn't happen frequently, just occasionaly.  Could a corruption produce this problem inconsistently?
===

I've never seen such an effect. Does this happen regularly or predictably? Does it happen when you run Thunderbird without add-ons, see Help menu to start with add-ons disabled.

Comment 4

[Brooke Jennings]

The spontaneous change in font is unpredictable.  I may go a few weeks without seeing it, and then it happens again.  

Running Thunderbird without add-ons didn't occur to me.  At the age of 73, I have lost some of my marbles.  However I am largely dependent on Classic theme restorer; the new GUI is optimised for small screens, but less functional on large screens.  I am not familiar with the new UI.

Comment 5

[Wayne Mery (:wsmwk)]

Brooke, do you still see this issue when using a current version of Thunderbird?

Comment 6

[Wayne Mery (:wsmwk)]

Thanks for the report. If you still see the problem please add more information to the report.