Exception when clicking Sync too fast

Beta Testing
1

Seems clicking on Sync too rapidly tries to start it twice, leading to this error. No actual effect.

Anki 2.1.31 (177ced7a) Python 3.8.5 Qt 5.15.0 PyQt 5.15.0
Platform: Linux
Flags: frz=False ao=True sv=2
Add-ons, last update check: 2020-08-18 20:30:07

Caught exception:
Traceback (most recent call last):
  File "/usr/lib/python3.8/site-packages/aqt/taskman.py", line 87, in _on_closures_pending
    closure()
  File "/usr/lib/python3.8/site-packages/aqt/taskman.py", line 59, in <lambda>
    lambda future: self.run_on_main(lambda: on_done(future))
  File "/usr/lib/python3.8/site-packages/aqt/taskman.py", line 76, in wrapped_done
    on_done(fut)
  File "/usr/lib/python3.8/site-packages/aqt/sync.py", line 99, in on_future_done
    mw.col.db.begin()
  File "/usr/lib/python3.8/site-packages/anki/dbproxy.py", line 34, in begin
    self._backend.db_begin()
  File "/usr/lib/python3.8/site-packages/anki/rsbackend.py", line 227, in db_begin
    return self._db_command(dict(kind="begin"))
  File "/usr/lib/python3.8/site-packages/anki/rsbackend.py", line 242, in _db_command
    raise proto_exception_to_native(err)
anki.rsbackend.DBError: DBError { info: "SqliteFailure(Error { code: Unknown, extended_code: 1 }, Some(\"cannot start a transaction within a transaction\"))", kind: Other }
2

I haven’t been able to replicate this by hammering the y key or double clicking - does it happen without addons?

3

That would seem to be an issue itself since I just noticed that holding shift on start no longer skips addons for me.

Is there a flag/parameter to do that directly?

edit: Never mind, added one. Error occurs all the same.

4

No luck reproducing it on another machine either. Can other people trigger this?