[#States API] Condition "visible when file filled" doesn't work

The attached webform replicates the issue.

It is unlikely that this can be fixed.

Hi,

Sorry to revive this, but I've been trying to accomplish different variants of conditional logic with the "File" and "Document file" fields, with no success*.

Does comment #3 entail that all conditional logic operations for file fields do not - and will not - work? Or just the "when filled" trigger/value is used? Are there other triggers, such as "Value is" which can be used successfully?

Can these behaviours be accomplished somehow by custom code or in some other way?

Any clarification / help / tips&tricks much appreciated!
joeboris

* Specifically, I need to show/hide fields and/or make fields required or read-only based on whether or not a file has been uploaded.