Restart in Troubleshooting Mode (Help → "Restart in Troubleshooting Mode…”), which temporarily disables all plugins. If that fixes it, you'll need to identify the plugin that's causing it and then report the problem to the plugin's developer.
So you should disable all plugins and then re-enable them one by one until you figure out which one is interfering. Then let us know, and also report the problem to the plugin developer.
https://github.com/MuiseDestiny/zotero-figure/issues/90