The item frame is an in game item that you can place items on it for show, the bug is that the mod changed item frame's behavior.

Step:
1, Place an item frame.
2, Put any item on item frame (hold an item and right click item frame).
3, left click item frame, the item and item frame both drops.

Normal behavior:
The item frame should not drop.

Removed simplyswords-fabric-1.54.0-1.20.1.jar from mods folder, the bug is gone, vise versa.

Minecraft version: 1.20.1
Mod loader: Fabric Loader 0.15.7
Simply swords version: FABRIC v1.54.0-1.20.1
Architectury API version: 9.1.13

I'm willing to provide any further information if you need it.

I can vouch for this, pretty sure it was introduced in the same update that added Flamewind and is an issue even in today's release still

Also happening on Forge 1.20.1

I can also vouch for this

still getting this on forge 1.20.1 47.3.0

Getting this on Fabric 1.20.1 too

• Fabric Loader 0.16.9
• Tested on Simply Swords v1.55.0

It's a pretty annoying bug, since a player is not expecting the actual item frame to drop, and the player must take the effort to reach into their inventory and swap their hotbar, in order to place the item frame back where it originally is. We downgraded to an older version of Simply Swords because of this.