Using the Builder, I have a Group which contains two sub-fields, both are custom taxonomy advanced select2 fields. https://cln.sh/LhtnnXw5
The fields work correctly unless I have the "Multiple" option selected. Then, the fields save properly, but the select2 inputs do not display correctly when the Post Edit screen reloads.
Here is an example video where I have selected and saved values & when the page reloads, the correct values flash for a moment before the select2 is initialized: https://cln.sh/KMlNdtrh
This causes the field values to be erased unless the values are selected every time the post is edited. I have been able to replicate this issue on two sites.
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