I have two monitors. 1st monitor has 3840x2160 resolution with 150% scaling and 2nd monitor has 1920x1080 resolution with 100% scaling. When I move the app between the monitor it gets stuck between the two monitors and I have to wait about 5 seconds before I can grab it an finish the move. I see on the title bar Not Responding.

Another similar issue is grabbing the corners or sides to resize it is very jerky.

PL/SQL Developer
Version 13.0.6.1911 (64 bit)
01.126109 - 10 user license
Service Contract: 7/1/2020
Windows 10 Build 18362

Can you try the same with the current 14.0 release?

Similar issue with. It stops in the middle, but I can grab the title bar again much quicker.

PL/SQL Developer
Version 14.0.0.1961 (64 bit)
01.126109 - 10 user license
Service Contract: 7/1/2020
Windows 10 Build 18362

Physical memory : 33,504,304 kB (18,358,240 available)
Paging file : 38,485,040 kB (18,178,636 available)
Virtual memory : 137,438,953,344 kB (137,434,088,556 available)

Since I posted the message, I did a Windows 10 fresh install, because I upgraded my SSD to a larger size. Still have issues of going between windows it gets stuck in between for a few seconds, before I get a titlebar again so I can grab and finished the move.

Another issue that is related, depending on which monitor (4K@150% scaling or 1920x1080@100%) all the context menus and code complete popups gets their spacing and font size screwed up.

We'll check it out.