0. Fabric 1.19.2-8.2.32 (x.x.31 works fine)

1. Describe the bug
   AE2 blocks are replaced with other AE2 blocks (or sometimes other blocks from mods) on the client side

2. Write steps to reproduce the bug
   Install Applied Energistics, and/or waystones. Place down any block from those mods

3. What is expected behaviour
   Blocks would be displayed as the blocks they are supposed to be according to the server.

are you sure its travelers backpack issue

There are likely multiple factors at play here, but x.x.31 works perfectly and x.x.32 doesn't. Given that this behavior can be reproduced by only changing this mod (and the versions are known) It's doing something.

so it's the same on client and server is it correct

did you update travelers backpack on server & client?

Changing the server version has no effect on this particular behavior. The newest, the one before (the one I have on the client) and not installed all results in the client side glitch.