Final Update 11/3: Hello everyone. I'm pleased to say this is now resolved. A fix was rolled out this morning that included several editor improvements, including this one where spaces were being automatically removed in some cases in Firefox.
If you still observe the space bar being removed between words, I'd try restarting your browser or clearing cache just to make sure the old code isn't cached somewhere.
I'm truly sorry this one took so long to resolve, but happy to see if be addressed.
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