Sorry for the issues with Hover over preset.
- Which version of LR are you using?
- What exactly do you mean by "not working", can you explain
- Have you tried reinstalling the preset.
Usually when you hover over a preset, you get to preview you what will happen in the top left of navigator. I just updated my creative cloud with the last update and now it off... I have no clue why? I just want to turn back it on.... It is for all 600 of my presets....
The software just crashed and now I lost my edits and the hover over presets came back..... Another "update" that messed up my workflow
As suggested you can try reinstalling the Plugin in LR , which should take care of the issue.
Like I said, the software crashed and now it is working properly