Plugin doesn’t save gallery for comments

Hello!

When adding images for comments, everything works correctly. But after I click “Update” and go to the comment editor, I find that the gallery is empty.

At first I thought that the ACF does not work correctly with comments, but then I noticed that the “Number” type field from the ACF is saved after clicking on “Update”. That is, the problem is still not in the ACF.
Has anyone already encountered similar?

I do all these actions from the admin panel of the site, not from the front side.