EDIT: Probably solved: Not an issue of Jerboa but Blokada interfering with the internet connection checks.
I thought I would ask here if someone else experiences this strange behaviour.
So I have updated my app to the latest version which is available on f-droid (which is 0.0.42 - I think there is already a 0.0.44 on github?). Since then I have the problem that I can neither vote, comment or post in the app. Trying to do so results in the above error message. If I try to open my profile, I get the message that I don't have internet connection which I clearly have. I mean the content is loading. It would be weird if they do without Internet. :) Next to my user name there is this warning triangle but I don't know what that means
If I go back to 0.0.41 everything works fine. No error messages and no triangle. I will add some screenshots for clarification.
Thank you for your response! My phone uses Android 8 (saidly the manufacturer doesn't provide the software upgrade...) and at least I did not actively revoke any permissions (as I don't know how :D)
However, your explanation what's actually happening gave me an idea what the problem might be and I found it: I am using Blokada and apparently this interferes with the check. Deactivating Blokada solves the problem and reactivating it will cause the same issues again. Then I also noticed that my Blokada version is way to old and it didn't received any updates because apparently it was removed from fdroid and there was a lot of fuzz about it which I need to catch up with.
So I guess it's not a jerboa issue. Still, thank you for your help! I really appreciated it.