Look at it this way, Gimp 2.9.5 at the moment will only permit DT/RT to open a RAW image from the Gimp File -> Open menu.
Which is fine if you want to use DT/RT I do not have any issues with DT/RT
I would prefer to use a much simpler interface, which if you look at earlier posts (no. 2) one is shown. The plugin still works, but not from the Gimp menu.
You are correct, I need to submit a bug report, but it needs to go to the Gimp maintainers not the plugin.
As far as I am concerned, I found out what I needed, how to get an image out of DT/RT and into Gimp. Close the window. No more discussion required.