Hi,I kept trying and found a solution to the problem myself:I was having the issue with CubeMX V5.6.1, V5.5.0 and V4.27.0 on a Kubuntu Linux 19.10 with OpenJDK 14Switching to OpenJDK 8 fixed the Issue for me.I don't know about MacOS but for the Linux...

Hi,any results so far? I am having this problem, too. (With the new 5.6.1 Version of CubeMX, and on Kubuntu Linux 19.10; openjdk 14)Update: I found the problem, see my answer below.