I'm pretty positive this is an OptiFabric issue but decided to create this issue anyway since there isn't any explicit mention of these issues/incompatibilities.

The following Objects will not render when placed if OptiFabric is present, resulting in a crash. The crash report contains the same content regardless of which one caused the crash to occur, the crash will also occur regardless of if shaders are enabled or disabled.

• Hanging Sign
• Sign Post
• Wall Lantern (works just fine if placed normally)
• Flower Box
• Blackboard
• Rope attached to a Fence (works fine in other instances)

Report generated when placing the object in a world
crash-2022-08-12_17.42.23-server.txt

Report generated when loading world with objects already placed
crash-2022-08-12_18.01.04-server.txt

Chocohead/OptiFabric#837

It should be noted that this issue was resolved in the process of updating to 1.19.2