1/ Select Tonight's Best (for Horizon Altitude = 0°), Click Esc to hide Tonight's Best panel : No problem
2/ Select Tonight's Best (and now change Horizon Altitude), Click Esc to hide Tonight's Best panel : it doesn't work
1/ Select Tonight's Best (for Horizon Altitude = 0°), Click Esc to hide Tonight's Best panel : No problem
2/ Select Tonight's Best (and now change Horizon Altitude), Click Esc to hide Tonight's Best panel : it doesn't work
Did you just upgrade to macOS 10.13 (High Sierra)? We have seen problems with the left hand panels there. We just submitted an update for the issues, but I have just discovered one more.
If you are not on High Sierra, what exactly is the the "It doesn't work"? Does the panel just not go away?
I think I see what is happening. We just release a SkySafari 5.3.3 release that fixed a problem with the left hand panels on High Sierra. There was a bug in the fix that causes what you are seeing. I will submit a fix today and hopefully it will be approved quickly.