Perry3D

I think the document doesn't exist anymore. I cannot open it and the preview is also not available. And i can delete other documents. 

I don't think so. But i am not 100% sure. Btw i use version 1.5.3 but the interface shows 1.5.2.

Screenshot of the issue. `` and `` do nothing after writing the slash 

These are the new highlights: https://github.com/neovim/neovim/blob/3217a31f9b0eb93a9c4d01f6a15b9a104e4f56f3/src/nvim/highlight_group.c#L267-L277