Sorry this plugin has been problematic based on what is possible unfortunately.
I switched to another code process in v3 that is supposed to do more of a full plugin reload but it's not very reliable it seems, could you please test it with v2 in your scene when you get a chance. I think v2 was the most stable version but it just doesn't do a full reload on all plugins and requires using the delayed triggers to fine tune the reload on some. That was what I used with testing on ExpressionRouter reloading.
v2...
hub.virtamate.com
@RunRudolf did v2 work in your use case? I am wondering if v3 OnClick reloading is just not possible and may need to roll back to v2 method of reloading. I can look at your code update and see if we can test that with StyleMavin's use case to see if it resolves for both hopefully.