Hi all,
I am having the issue that is logged the bug below.
BUG-000170288: Tonal marks in the Thai language are incorrectly overlapped when used in ArcGIS Dashboards.
However, the bug is noted as a known limit, which is unfortunate. Especially, when Experience Builder has overcome this issue by supporting the integration of Google Fonts.

The ability to add Google Fonts and resolve the issue in Experience Builder.
The same capability in ArcGIS Dashboards would be beneficial and allow myself and other users in Thailand to overcome this issue. This is because having a dashboard that cannot display fonts properly, or use outdated fonts for Thai language that is not fully supported, such as Arial,makes the dashboards look outdated in the year 2026.