"No ongoing transfers" even though some folder still are unsynced

My Insync (1.2.5) shows “No ongoing transfers” in the progress tab even though some of the folders remain unsynced.
I noticed that the folders that are affected are mostly programming related (very deeply nested with long folder names), however Insync did not show any message concerning path length or anything similar. Is this a known problem and are there any workarounds?

Kind regards,

Another user reported a similar problem and could be related:

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Thanks for reporting the issue.

cc @dipesh