Text highlight not sticking - Post Anniversary Update Issue

Immediately following the Anniversary Update, I have been experiencing issues with text highlighting.

Left click text highlighting rarely 'sticks', or stays highlighted after releasing the left mouse button.

Right click text highlighting doesn't highlight text at all.

I have tried using another mouse (different manufacturer) - same issue.

Does anyone have any suggestions, or has anyone experienced this issue?

Thanks

P.s. I've tried some basic troubleshooting such as searching for updated drivers, restarting system, using another mouse (as mentioned)

Hi dalchina,
Great suggestions, thank you.
I will try certainly try them and report back.