Backdrop stays after finishing editing with “Edit modal” set to Native

Hey,

I discovered this issue, where the backdrop stays after I try to close the editing Window (closing the dialog with the “x” in the top right or adding an image to the gallery) when the Edit modal is set to “Native”. This is a bit annoying, since I have to refresh the browser window to be able to interact with the backend again. When the Edit modal is set to “Default”, the backdrop behaves as expected and closes with the dialog window.

The backdrop has the class of “acf-gallery-backdrop”. I am using Version 1.8.0 of your Plugin, version 6.0.7 of ACF and version 6.1.1 of WordPress. Tested on Firefox, Edge and Chrome.