Copy a child on mobile issue

When I use the copy record function on the desktop (copying a child record in this instance), it works as expected. However, when using mobile, it looks as if it is working (all fields are copied, including the related field), except when I save it blanks out the related field and it becomes an orphan. Does this happen to others and it is a bug, or is it something else?

I get this behavior in any table, and even if I disable all dynamic rules. I suspect it is a bug, but let me know if anyone else replicates.
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Mike Tamoush
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