Glow lichen is not found in nature among the vines.
It's on the Items tab.
Steps to reproduce:
- Open your inventory in the items tab or all.
- Find the glow lichen.
The glowing lichen will be in the items tab, instead of nature and not among the vines.
The glowing lichen will be among the vines in nature.
In the Java version, it is located in the nature tab next to the vine.