I am getting those from the official site for the R4S dongle, r4i-sdhc dot com.
And at least for the size of the UF2 files, yours and the official ones are the same size: 524.3 kB (524,288 bytes).
Drag and flash works perfectly with the UF2 files from the official R4S site.
About software interfering with flashing, I am running on Linux, but that shouldn't be interfering with anything. Specially considering I can flash the official files without a problem.
But for the sake of...
Yes, it has a CURRENT.UF2. It also has a INDEX.HTM that redirects to the R4S site and a INFO_UF2.TXT with the following contents:
UF2 Bootloader v2.0.0-adafruit.5-dirty SFHWRO
Model: RCM_DONGLE
Board-ID: SAMD21E18A-RCMD-v0
Ah, that's what you meant. Yes, it's opening as normal.
I can confirm that it also flashes the original payload from the R4S without any trouble, just in case that's relevant.
Only thing drive me crazy is all these new horror games nowadays is its so dark, all time. I can't even play them. I understand they trying to create spooky but be creative a little, not just darkness with pop out scare scenes.