Note: 1.17.0 works fine this makes the bug less of an issue however it is still a bug
Basically using format version: 1.16.200, 1.16.210 1.16.220 & 1.16.230 causes item icons to break meaning you can't use molang features added after 1.16.100 in items.
Steps to reproduce:
1). Create a 1.16.100 item file that has no issues.
2). Update. Version number to a newer version.
Item icon continues to work as normal as the documentation lists no changes to item icons after 1.16.100
Item has no icon and spams an error about needing an icon when viewed
Several attempts to make items with newer version numbers are listed below: