External setup is similar, both machines use a dell dock station with two external monitors. There are DisplayLinkManagers 1.4.0 installed on both machines for the dock station.
The macs have different hardware, here is the log from the other mac that runs fine:
Spine Launcher 4.1.01
Esoteric Software LLC (C) 2013-2021 | http://esotericsoftware.com
Mac OS X x86_64 10.16
Warning: the fonts "Times" and "Times" are not available for the Java logical font "Serif", which may have unexpected appearance or behavior. Re-enable the "Times" font to remove this warning.
ATI Technologies Inc., AMD Radeon Pro 5300M OpenGL Engine, 2.1 ATI-4.7.29
Launching: Spine 3.7.94 Essential
Spine Launcher 4.1.01-legacy
Warning: the fonts "Times" and "Lucida Bright" are not available for the Java logical font "Serif", which may have unexpected appearance or behavior. Re-enable the "Times" font to remove this warning.
Starting: Spine 3.7.94
Spine 3.7.94 Essential
Licensed to: *****, *****
ATI Technologies Inc.
AMD Radeon Pro 5300M OpenGL Engine
2.1 ATI-4.7.29
Started.