Closely relates to MC-129826, MC-214662, MC-236474 and MC-262410.

The bug

When placed, mangrove propagules appear darker than other cross models and darker than their item form would imply.

How to reproduce

1. Place a mangrove propagule
2. Compare it to its item texture

Expected results

The mangrove propagule would be brighter.

Actual results

It isn't.

How to fix

This is an incredibly easy fix - just add

"shade": false

to each of the four elements of models/block/mangrove_propagule.json. I've attached a fixed model file and fixed resource pack to demonstrate this fix. Mojang have my full permission to use this fix.

Further notes

Potted mangrove propagules are also affected and will need a separate fix (MC-129826's fix alone will not carry over to them). MC-262433's optimization fixes this issue for potted mangrove propagules.