Loss of Thai font rendering in Book Collection names in v. 8.3.1 to 8.6.5

Up to SAB 8.3.1 the Thai fonts of Book names rendered correctly as below

All versions after SAB 8.3.1 including 8.6.5 do not render the Thai font of the book names as below

Please find a fix for this. If you know anything I can try please let me know. -Roger Green

Are they both in Classic theme?

Thank You. Changing it to Classic allowed the Thai font to show correctly.

Now how do I get the complex font to show correctly as in the middle circle, instead of the squares. Why is it grayed out in the middle? Can it be changed to full black somehow? This font requires crosswalk to render in the app.

Thanks, Roger