No server mod, only client mod.
sand became lava, water is full of seaweed, houses is a mix of woods with carrots on their top, inventory is change with diamond sword, puzzle bloc and other items doesn't match with actual inventory.
I suppose it's link with this example of line in command :
[17:52:36] [main/WARN] [ne.mi.re.ForgeRegistry/REGISTRIES]: Registry minecraft:sound_event: Object did not get ID it asked for. Name: minecraft:block.note_block.imitate.creeper Expected: 851 Got: 1388
that's provide the same as I install the server, I paste the old world and I relaunch the install server on it.
I've just try, copy full server in 1.19.2 and launch server installer to update it in 1.19.3. -> same result of run.bat launch and same result when log in server.