Well, basically the title explains itself. I can't use the Skin tab on the new MCL on Linux because it displays an 'unsupported platform' error message.
MCL-10393
Skin cannot be changed using new MCL on Linux
Resolved
Cannot Reproduce
0
(Unassigned)
Unconfirmed
elementaryos, java-edition, linux, mcl, skin, tab, unsupported-platform-issue
Retrieved
Since skins will be a completely new system in the new UI, we're now closing all issues related to the old skins functionality.