I am running Google Chrome 76+ on macOS Mojave 10.14.6.
I have come across an issue where highlighting text in the browser will fail randomly. I ran into it enough times that I started trying to reproduce it (by highlighting text). You can see the issue here:
(Original link was to MP4 video, that was converted to a gif, which doesn't seem to display here)
When the cursor remains an i-cursor, the trackpad is still held down but the text is not being highlighted. It looks like it might be Chrome being unresponsive for a split second and not catching the event?
I have asked a few people to try and reproduce this and they have not been able to do so. I am starting to think this is a 15" MacBook Pro problem (maybe some sort of interaction between macOS Mojave graphics drivers/Google Chrome 76+?)
It doesn't seem to happen in Safari or Firefox.