Fix for missing locale for dropped spawners. This had no effect on what type of mob it contains and will be properly updates on next spawner braking.
Fix for doublemoney charge when you open shulker backpack
Fix for missing money message while opening shulker backpack
Fix for issue with mob spawn prevention while you are afk
Fix for mobs still naturally spawning around vanished players when you have set option to not spawn them. This now will include spawner spawned mobs.
Fix for sign edit command not tabcompleting correct sign side text as of 1.20 version. Now it will properly suggest you the side you are looking at
Partial support for delay! variable for attached commands. Now you can use this variable to introduce delay between commands, keep in mind that using it will limit general functionality as we no longer can check if command was performed or not due to this introduced delay, so we will assume that it was and some actions will be done on item independent of commands outcome, this usually has no real impact as it only applies to specific situations, main use case is limited items, we will use up a charge on item independent of command outcome while without delay it would only consume if command was performed successfully.