new update (24.2.3) brings back Thai language problem when creating outline

Thai font deleted or missing when create outline.
Most of the time it happens to few or last fonts of the line.

NOTE: weird thing is when newly launch the app and open CC2020 file first, Create Outline works fine. But once I open another file which is legacy file eg. CS6, this issue suddenly happens. After that if I continue working on CC2020 file, this issue also happens on CC2020 file.
The problem will reset once I quit the app and relaunch. And happen again if I open legacy file.

Macbook Pro 15"
OS 10.15.5
IllustratorCC version 24.2.3