PSA: Getting reports of mcMMO not working, almost all reports of this are because mcMMO is using API from newer versions of CB, update your server software (Spigot/Paper).

READ THE CHANGELOG CLOSELY, MINING FIXES REQUIRE UPDATING YOUR CONFIG.

There will be a small PVP balance patch in the next week or so. The config update is still in the works, but I'm taking my time to make it even better.

• Fixed a bug with Double Drops for Mining (Update your configs instructions below)
• Fixed a 7 year old bug where damage in mcMMO from Skills was potentially getting reduced by damage reduction TWICE
• Fixed a bug where killing entities with Rupture would not properly credit you as the killer
• Fixed a bug where Serrated Strikes was applying Rupture twice
• Players will now be ejected from Minecarts if they cast their fishing rod (anti-afk)
• Many nerfs to Rupture, its now much more reasonable and not very useful against Protection IV opponents
• Rupture's strength is now related to your equipped Sword
• Rupture will no longer be applied if the target is blocking, this doesn't prevent existing bleed damage from occurring though.
• Wolf's Rupture has strength equivalent to a Stone Sword
• Only Diamond swords will have bonus rupture damage at Rank 4
• Rupture damage is cut in half for weapons below Diamond in quality, if the weapon is wooden, the damage is cut in half again.
• Swords below Diamond quality will have their tick duration drastically reduced
• Rupture damage is reduced by 25% on players if they are wearing Full Armor (can be any type)

Note: You'll need to add these entries to your config.yml manually, or wait for the upcoming config update where this will be fixed for you automatically.

Here's what your Double_Drop entries in Config.yml for Mining should look like

https://paste.gg/p/anonymous/dcd06f1215844311b4f2225f200090d1

IMPORTANT:

Version 2.1.22 which came before this had a similar fix for Herbalism, instructions on how to fix your Herbalism Double Drops can be found here
https://www.spigotmc.org/resources/official-mcmmo.64348/update?update=269868

Due to the nature of these fixes, Fortune enchants now work with Double/Triple drops