Too much space between emphasized f and caret (cursor)

[Daniel]

I noticed that the caret is differently placed after some characters. 
For example, this gives the impression that there is a space between an 
emphasized f and the caret, see attached screen capture. Previous 
versions of LyX did not show this. I consider this a regression. The 
selection highlight (blue rectangle) is also wider.

There seem to be some positive effects in the vicinity though. The right 
side of f does no more dangle out of the insets. (Though the left side 
still does.) However, if this is the only benefit, I am not sure it's 
worth the cost.

I guess the ideal solution would be to have the cursor (and selection) 
still close to the letter while giving more space in the inset. But I 
don't know whether that is doable.

Daniel
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