Hey Florian! Thanks for the feedback!
Interesting. Generally, the way Ontology Manager works is we cache data from external systems (e.g. Functions) on the first load so we can then skip refreshes when you open dropdown selectors again, and only the ontology-specific data is refreshed regularly. I will pass the signal, though, and maybe something could be done about function versions specifically.
Separately, I would want to work on making Ontology Manager load faster and make these page refreshes a bit less painful for you 
Curious if you are looking for compatibility with specific framework because you sync data between two systems or rather just having a documented and consistent import/export format you can use for your ontology?