Steps to reproduce the issue

Create a blank module
Add a new fieldset (to place the fields in a custom tab)
Add some fields
Add a field of type color that it is the last of the fieldset OR the last in a column AND is hidden on load (showon)

Expected result

The color picker is rendered as always

Actual result

In Chrome: the colorpicker is "splitted" over two columns

In Safari the colorpicker "kills" the next column -> fields from content 3 gets moved to column 2:

System information (as much as possible)

Joomla 4 Beta 5
The color field has a showon attr and is hidden on load

Chrome: Colorpicker splits
Safari: When colorpicker is open the next field moves from column 3 to column 2 (may be needed to investigate with another issue because the columns rendering is different with safari (3 fields goes into three columns in chrome it places this 3 fields in 2 columns) then it is with chrome)...

Additional comments

Any information how to control the columns behavior?
Did yet not find any docs about it.