Track size locking and customisation

There does not seem to be a way when importing more than 4 files simultaneously to prevent the track sizes from getting any smaller. They snap back to import size with every processing maneuver. Is there a way to make 3 or 4 tracks show without any fitting to height, or more importantly is there an “unfit to height”?

See also these related issues:
“Fit to height” loses relative sizes of tracks and channels #2551
Project. Audacity doesn’t save track height with in-between adjustment #2138