Wide Cursor in Composition Mode

Is there some reason the cursor is so wide in composition mode? Does it happen for everyone?

It obscures letters and sometimes makes it seem that there are two spaces or something.

Screen Shot 2018-12-09 at 11.51.01 AM.jpg


Screen Shot 2018-12-09 at 11.49.30 AM.jpg


Slàinte mhòr.

Much better. Thanks.