Created attachment 204341 [details]
Footnote separator width change as we type/remove RTL characters

Consider the attached screen capture.

You will notice that once I type a Hebrew character into the footnote - the rendered width of the footnote separator increases. If I remove it - the width decreases again. If I type Latin characters - no increase; if I type latin chars and a Hebrew char - increase.

What the video doesn't show:

* This also happens if I type an Arabic character, so it's probably not language-specific.
* I sometimes see the _opposite_ phenomenon, i.e. the separator is initially wider, and with the Hebrew character typed - it becomes narrower.
* If I do the same thing at zoom 100% - same behavior. At a zoom level of 200% I don't see a width change, only a slight movement upwards of the position of the separator. Perhaps this indicates some sort of rounding gaffe at the lower zoom level, with the separator really only moving rather than increasing in size?

I am not even 100% sure the RTLness is even the issue here.