Clicking on different tabs of the book causes a client crash

[thedeerirty]

Not sure if this is an incompatibility - I imagine it is, but rather I'm not sure with what
crash-2023-09-23_23.22.18-client.txt

[QinomeD]

Yeah it's incompatible with immediately fast, it's already known

[RaphiMC]

This is caused by the wrong usage of MultiBufferSource. You are supposed to create one (Passing the Tesselator buffer) and store a reference to it, then call some methods which render into it and then draw the buffer source (Not the Tesselator). Calling tess.end() here (https://github.com/Team-Eidolon/eidolon/blob/1.19.x/src/main/java/elucent/eidolon/codex/EntityPage.java#L48) is just wrong and causes some data to be discarded instead of being drawn. And in the case of IF it causes a crash since IF never uses/begins the Tesselator buffer that was passed as argument