I checked here and no, I cannot reproduce the problem. I have 737 profile default ( both Cargo doors set to "AUTO" ), and I can only see Belt loaders, front and back. I tried restarting GSX 10 times in a row, to be sure I wasn't fooled by the random selection, but I always got the Belt loaders.
I also tried to set the loader type in the airport profile to "Cargo Loader" both front and rear, but I still get only Belt loaders. This test has been also made 10 times in a row, to be sure it won't be affected by random selection.
You can check if you have the latest file for the cargo loaders by looking at these files:
\Addon Manager\MSFS\fsdreamteam-gsx-pro\SimObjects\GroundVehicles\FSDT_Cargo_Loader_CHAMP70\sim.cfg
\Addon Manager\MSFS\fsdreamteam-gsx-pro\SimObjects\GroundVehicles\FSDT_Cargo_Loader_CHAMP70_S\sim.cfg
\Addon Manager\MSFS\fsdreamteam-gsx-pro\SimObjects\GroundVehicles\FSDT_Cargo_Loader_CHAMP70_W\sim.cfg
All three should have this line towards the end of the file, in the [Couatl] section:
condition_1 = %(ULDCode)r != ""
also, there's a 2nd condition line below, like this, which is different for each model:
condition_2 = %(exitAlt)f >= 2.8 and %(exitAlt)f <= 5.60
Check all 3 files, all of them must have both condition line, but the most important one is the 1st one. If you have only ONE condition line, without a number, so you only have "condition" instead of "condition_1" and "condtion_2", it means you have the OUTDATED file!
Now, since as I've said, this file has been updated in version 3.4.1, and the latest Offline installer is 3.4.3, if you use the 3.4.3 Offline installer (we don't have a 3.4.4 Offline yet), I'm quite sure you should get the correct file.
However, it would be interesting to know if, by updating to 3.4.4 using the normal installer, your files would be "downgraded" to a version before 3.4.1, which would indicate an issue with your local cloudflare node indeed.