Updated Flexible Content UI breaks in the side bar

Describe the bug

The updated flexible content field UI doesn't scale down sufficiently and visually breaks

To Reproduce
Steps to reproduce the behavior:

1. Add a flexible content field to a field group
2. Position that field group in the side bar
3. See that text overflows the available space

Expected behavior

I expected the UI to not break.

Screenshots or Video

Code
N/A

Use any flexibly content in any field group in the side bar.

Version Information:

• WordPress Version : 6.6.2
• PHP Version : N/A
• ACF Version : 8.5.0
• Browser : Latest Chrome

Additional context

This website uses the Classic Editor.
But the same issue will probably exist anywhere on small enough screens, regardless of the placement of the flexible content field.

Not enforcing heights and allowing flex containers to wrap already works better when the available space is limited.

Reproduce the issue by placing a flexible content field in a WordPress field group assigned to the sidebar, using the reported WordPress 6.6.2 and ACF 8.5.0 setup. Inspect the flexible content UI at narrow widths and compare its flex sizing and wrapping behavior. Done means the sidebar and other small-screen layouts no longer overflow or visually break.