Web date picker shows its selection panel on stacked modals

X 2025R2.1 - webapp
I have a window which is a form. It has a button which opens a (#1) modal web dialog over it. Thsi dialog has a date field on it. If a user presses a button on #1, another modal (#2) opens over it. The first time #2 opens, the date selection panel from #1 is shown. If #2 is closed and reopened, the selection date selection panel is not shown.

Browser is Firefox 142.0 x64 on Win 10.
(Edit: Chrome Version 139.0.7258.139 (Official Build) (64-bit) displays the same issue).

Is this a bug?
Example project zip attached shows the behaviour:

DoubleModalTest.zip (9.6 KB)

Many thanks
Steve

Oh that’s fun. Another ticket :slight_smile:
Perfect example project – just run and there it is.

Confirmed on Firefox 142.0 aarch on macOS 15.6.1