First of all I want to congratulate you on the great GQRX software, Alex! Excellent job! I've been running version 2.9 for quite some time with great success.
I run GQRX on a RPI3-B running Stretch with a 8" Eyoyo monitor at a maximum resolution of 1024x768. I use a RTL-SDR dongle that takes the input after the first preamp of an IC-275H all mode radio. This makes an excellent combination for VHF contesting because it allows me to see the whole weak signal portion at once and click-tune a signal. This really bring this old 80s era radio into the 21st century.
Today I tried version 2.11.1 and ran into a problem:
With version 2.9 I was able to resize the waterfall/spectrum view, but it seems to have a minimal fixed width in version 2.11.1 that I just tried. I cannot resize the waterfall to make it fit on my little monitor anymore. Unfortunately, that makes version 2.11.1 unusable for my setup, and have to revert back to 2.9. I did make sure I have all the latest updates and prerequisites loaded. Did I perhaps miss a setting or configuration parameter?
Cheers,
--Alex