My understanding is that DDTG 4.02 will likely fix this issue when it is released.
In the interim this is an iOS Shortcut which works to save bookmarks and files to DTTG 4.
It’s an interesting learning experience with what can be done with Shortcuts so was worth a small learning curve even though the native share sheet feature should be fixed soon.
This shortcut saves to a fixed group (which you need to select by editing the shortcut) but you can instead opt to choose the destination Group each time if you wish.