I would like to take advantage of the fact that you are on troubleshooting to return to this topic.
The experience is still painful for me.
I tested by switching Gmail to English (instead of French), I see the same anomalies.
My concern is really related to refreshment, and labels that do not update immediately.
It lasts and it is really frustrating for me, I hope that a solution can be found quickly.
So I use a board with 3 panels: an outliner panel, an inbox mail panel (“boîte de réception” in French), an email panel with the items sent.
The panel with the sent elements always takes several minutes to refresh properly (even if I restart Legend).
However, when I send an email, I sometimes need to slip it into the outliner. The waiting time is so long that I sometimes forget to do it, it’s complicated to manage in my delegation of tasks.
I also noticed a refresh problem with the labels.
When I process all the emails in the inbox (I apply the principle of the empty inbox), the emails in the sent mails panel still receive the inbox label (“boîte de réception” in French). The labels therefore take several minutes to cool off.
Finally, one very last thing. When I archive an email, it happens from time to time that it reappears immediately, so I have to archive it a second time. On this point, it’s much more stable than before, a few months ago, I sometimes had to archive an email 4 or 5 times before it was really archived. This is no longer the case, it just lacks a bit of stability.
I feel like I am getting painful with this same repeated request, but it really is a real problem to deal with. I hope it will be possible to find a solution.