Best Java version for ACS

I'm having problems using some facets of ACS 1.1.9.5. The problems are not new to that version, but that's what I'm currently using. The biggest issue is that using ***multi-tab*** green screens randomly changes the window size, sometimes to double the size of my monitor, other times to 2" x 3" window. Another issue is ACS crashing or locking up if I have too many windows/sessions open. (No judgement! We manage 30 partitions here.) ACS "About" says:

java.version: 17.0.9
java.vendor: Eclipse Adoptium
java.home: C:\Program Files (x86)\Eclipse Adoptium\jre-17.0.9.9-hotspot

(Adoptium is our company's current standard to replace Oracle.)
IBM support wants me to use Java 11 which, if I understand Java versioning correctly, seems like a downgrade. They are specifically recommending IBM OpenJ9's Java 11, which is at least 3 years old. Their download site shows OpenJ9 Java 21 LTS. Not knowing how much longer IBM will support version 11 (LTS), I'm wondering if anyone is using a version of OpenJ9 Java newer than version 11 and not having problems with ACS.

- Dan

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