https://gist.github.com/06763044bf228798d323

Not sure what caused it, just reporting it because I saw your mod mentioned.

Not really sure what would cause that... Please try with the latest release (1.0.17) and let me know if it happens again.

This issue occurs occasionally when I disconnect from a server.

Not always, occasionally.

I know what is happening. When the client is disconnected from a server (or singleplayer) Minecraft.thePlayer is nulled out. Thus this line:

https://github.com/superckl/RecipeTooltips/blob/1d16b145eceeca126cb54fbcaa166e1e3daddb88/src/main/java/me/superckl/recipetooltips/handler/RenderTickHandler.java#L172

Will NPE.

Thanks @tterrag1098

New version has been uploaded to CurseForge.