Tags shown on live post and in edit mode are different

[cellio]

https://software.codidact.com/questions/278780

After removing two tags and adding another one for this question I have noticed that the tag list is not the same between view mode and edit:

• View mode: stack-memory + heap-memory + ram + memory-management
• Edit mode: stack + heap + memory-management

This was reported 12 days ago and it's still like this. @ArtOfCode- wrote in a comment:

It's a non-expiring cache, @alexei - only shows up in specific situations, but that's one of them. Most of the time it's correctly in sync, but every now and then...

Can we do something about these cases? If detecting and handling them is hard (I know cache invalidation is a hard problem), maybe there could be a way for a user to trigger a refresh?

[cellio]

Duplicate of #268.