File picker opens in the back
Same problem as #421 appears, when you're trying to save file as :

Confirmed to me too in both tickets, here and #421
Enviroment
Ubuntu 20.04.1 Focal Fossa
Diagrams Desktop 13.9.9
Could be related with #153 ?
Confirm for Ubuntu 18.04 & draw.io 11.1.4-229 Error message on console: Gtk-Message: 18:26:59.111: GtkDialog mapped without a transient parent. This is discouraged.
I still got this issue on Manjaro KDE in draw.io version 18.0.6
We can leave it open, but there's nothing we can do to fix it. You need to supply a repro example to electron as an issue.
How do you mean that exactly? Open an issue on the Electron git repository refering to this repository and this issue?
I've tried to find a similar issue on the github issue-tracker of Electron but failed to find one. I've opened a new issue on their Github Issue-tracker mentioning this bug. The issue can be found on https://github.com/electron/electron/issues/34341
https://github.com/electron/electron/issues/32857
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