I am running FF 86.0 (64 bit) on Windows 10 Home and it is behaving very badly today. (The timing is odd because I haven't noticed it doing an
update today, although I turned away at one point and it might
conceivably have done so.) Everything was fine yesterday and for the
last several years.
The problematic behaviour first became evident in YouTube. I was
watching a video and tried to write a comment. I clicked on "Add a
public comment" and got the expected line but when I tried to type, got
very odd behaviour.
Here's what I found:
- most letters typed perfectly normally
- the letter 'i' (or 'I') took me to the main page for that YouTube channel
- the letter 'f' (or 'F') put me in full-screen mode for the video
- the letter 'k' (or 'K') toggled play/pause as did the space bar
- the letter 'n' (but not 'N') took me to the next video in the list (I
have autoplay set to off)
- I didn't try any other characters.
I went to another website that allowed commenting and everything worked
fine there. It seems like this problem is unique to YouTube and Firefox.
This is utterly bizarre: I've never seen anything like that before.
In an attempt to isolate the scope of the problem, I tried the same
thing in Chrome and Edge and everything worked normally there. I also
tried my other laptop which has the exact same version of Firefox, and everything worked normally there too.
Why would I have trouble in just *one* copy of Firefox? And more to the point, how do I fix this problem?
The objective of javascript and imposing the use of it, is to
eliminate functionality and productivity. It usually wastes between
one and twelve hours of each of my days.
And, it crashes about three to six times daily.
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