Error 500

Thanks for the info.

I tested on a local Moodle 3.0 installation, and I got the same result as you: Moodle is creating Joomdle folders with permissions=777, and all files with permissions=666.
I did some googling, but could only find this:
moodle.org/mod/forum/discuss.php?d=322109

I tested installing a block in Moodle, and could see that permissions are also set this way.

I will try to do some debugging, to see if I can understand why it happens.

Thanks for checking further and for the heads up. Notably I found this line in moodle's config.php... "$CFG->directorypermissions = 0777;" I'm pretty sure this isn't what they meant )

Wow, it's alredy been 4 months... I was thinking more like 2

Anyway, I did some follow up on this problem and finally added the issue to Moodle tracker, to see if we can get more ino.
In case anyone is interested, it is at:
tracker.moodle.org/browse/MDL-53688

Thanks for the followup and for adding this to the Moodle tracker. I'll keep watching.

For reference, discussion has continued here:
tracker.moodle.org/browse/MDL-53899

It seems change is ready and will be included in a future release.