Two of my inventory slots aren't working properly, which are the top right corner, and three spots to the left of that one. Items will go into the slots, but I am unable to move them from that slot to use or discard them. This only started happening after my Minecraft crashed, though it may be unrelated.
Thank you for your report!
We're actually already tracking this issue in MC-143776, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.