I.e. when walking forward, chunks in front of you will shortly disappear before being replaced with real chunks.
Might be server-specific, happens on Wynncraft but couldn't reproduce in SP in my dev env.
Works as expected with Sodium 0.1 / Bobby 1.1.4.
Tried again with 1.1.4, and it's happening there as well now, so might just have been a change in how Wynncraft sends its chunks, not the Sodium 0.2 changes. Only tested with Sodium but not sure if it's actually required for the issue.

Can reproduce without Bobby with just Sodium 0.2.0, could not reproduce with just Sodium 0.1.0 (but could with one of my 0.1.1-SNAPSHOTs), so this is a Sodium issue (CaffeineMC/sodium-fabric#711), unrelated to Bobby. It's just way more obvious with Bobby.