Hey AilingTheo, thanks for reaching out and sorry to hear about the issue you've been dealing with.
As this particular issue does not look to be brought up already, for reproduction purposes, would it be possible for you to provide us with the following by any chance:
1. Video footage showing the issue (can upload it to any external video sharing website and send the link over to us to review)
2. Your game's save file, which by default should be located in %userprofile%\Documents\Anno 1800\accounts
Keep us updated and should you have any questions in the meantime, let us know!
As this particular issue does not look to be brought up already, for reproduction purposes, would it be possible for you to provide us with the following by any chance:
1. Video footage showing the issue (can upload it to any external video sharing website and send the link over to us to review)
2. Your game's save file, which by default should be located in %userprofile%\Documents\Anno 1800\accounts
Keep us updated and should you have any questions in the meantime, let us know!