Audacity app has ugly interface and initial error message

I have installed Audacity application (currently at version 2.3.3) from snap store and as soon as I run it the following error message appears:
then as you can see the interface is ugly, it seems that the gtk theme is not used.

Any possibility to solve this error message and to have the gtk theme?
Thanks in advance

See the GitHub issue for details:

My latest comment is included below in case someone in snapd-land cares to weigh-in.

It seems that snapd has failed to parse the .desktop file correctly resulting in the Exec= line to include extra parameters that cause these dialog boxes. The file reads:

Exec=env BAMF_DESKTOP_FILE_HINT=/var/lib/snapd/desktop/applications/audacity_audacity.desktop /snap/bin/audacity UBUNTU_MENUPROXY=0 audacity %F

As can be seen, audacity is included twice. The app is launched by /snap/bin/audacity and the three parameters after are passed to the app when launched. These parameters are what causes the popups because audacity is trying to open them as files.