If you try to catch fireflies while they disappear, you will not get the fireflies and bug net still loses durability. Stumbled upon this while trying to catch them in waterlogged biome. This wasn't the case before, you could catch them like that just fine.
Steps to Reproduce
1. Fireflies disappear when you get close to them
2. Try to catch them while they're disappearing
3. Fireflies won't be caught and your bug net will still lose durability