Seems to be an incompatibility issue. This issue can't be replicated if I'm only loading Origins and Caelus API mod.

How to replicate:

1. Select Blazeborn as starting origin (or change with Orb of Origin)
2. Die
3. Respawn (will be in the nether if you didn't set spawn point in the overworld)
4. You may respawn inside blocks. Otherwise, right clicking any block in the nether will instantly transform the block into water. Getting into a portal won't teleport you to the overworld either.

My mod list:
3dskinlayers-forge-1.4.2-mc1.18.2.jar
alexsmobs-1.17.5.jar
appleskin-forge-mc1.18-2.4.0.jar
architectury-4.1.36.jar
artifacts-1.18.2-4.0.6.jar
AttributeFix-Forge-1.18.2-14.0.1.jar
AutoRegLib-1.7-53.jar
awesomedungeon-2.0.5.jar
AwesomeDungeonEnd-Forge-1.18.2-1.0.0.jar
AwesomeDungeonNether-Forge-1.18.2-1.0.0.jar
balm-3.0.2+0.jar
bettermounthud-1.1.4.jar
BetterThanMending-1.7.1.jar
Bookshelf-Forge-1.18.2-13.0.7.jar
breedablekillerrabbit_1.18.2-1.7.jar
champions-forge-1.18.2-2.1.2.2.jar
chromatocreeper-1.18-1.1.jar
citadel-1.11.1-1.18.2.jar
ClearDespawn-forge-1.18.2-1.1.7.jar
Clumps-forge-1.18.2-8.0.0+7.jar
collective-1.18.2-4.25.jar
Companion-1.18.2-forge-2.0.1.jar
configured-1.5.3-1.18.2.jar
Controlling-forge-1.18.2-9.0+17.jar
corpse-1.18.2-1.0.1.jar
CosmeticArmorReworked-1.18.2-v1.jar
curios-forge-1.18.2-5.0.6.3.jar
cyclepaintings_1.18.2-2.2.jar
defaultoptions-forge-1.18.1-14.1.0.jar
Ding-1.18-1.3.0.jar
dismountentity_1.18.2-1.6.jar
dragonmounts-1.18.2-BETA_1.1.0b1.jar
ecologics-FORGE-1.18.2-1.5.0.jar
EnchantmentDescriptions-Forge-1.18.2-10.0.2.jar
expandability-6.0.0.jar
farsight-1.18.2-1.7.jar
farsightedmobs-forge-1.1-1.18.jar
FastLeafDecay-28.jar
feature_nbt_deadlock_be_gone_forge-2.0.0+1.18.2.jar
ferritecore-4.2.0-forge.jar
ffenchantments-1.18.2-1.5.0.jar
FpsReducer2-forge-1.18.2-2.0.jar
friendsandfoes-forge-mc1.18.2-1.3.2.jar
geckolib-1.18-forge-3.0.12.jar
giantspawn_1.18.2-2.8.jar
goldenhopper-1.2.6-1.18.2.jar
Highlighter-1.18.1-1.1.2.jar
horsestatsmod-MC1.18.x-1.4.3.jar
Iceberg-1.18.2-1.0.40.jar
illagersweararmor-1.1.4.jar
improvedmobs-1.18.2-1.10.7-forge.jar
InsaneLib-1.4.6-mc1.18.2.jar
jei-1.18.2-9.5.5.174.jar
Kiwi-1.18.2-forge-6.0.2.jar
lazydfu-0.1.2.jar
levelhearts-1.18.2-2.4.0.jar
LibraryFerret-Forge-1.18.2-1.0.3.jar
LibX-1.18.2-3.2.2.jar
Measurements-1.18-1.2.jar
meetyourfight-1.18.2-1.2.3.jar
MmmMmmMmmMmm-1.18-1.5.1.jar
MoreVanillaLib-1.18.2-3.1.1.jar
NaturesCompass-1.18.2-1.9.5-forge.jar
Neat+1.8-30.jar
netherportalfix-forge-1.18-9.0.0.jar
nologpunch-1.18.2-2.0.0.jar
notenoughanimations-forge-1.5.0-mc1.18.2.jar
nutritiousmilk_1.18.2-1.9.jar
observed-1.2.2-1.18.jar
oculus-mc1.18.2-1.2.2a.jar
ParCool-1.18.2-1.0.0.1-R.jar
ProgressiveBosses-3.5.6-mc1.18.2.jar
PuzzlesLib-v3.3.2-1.18.2-Forge.jar
Quark-3.2-346.jar
radium-0.7.10.jar
radon-0.8.1.jar
revamped_phantoms-forge-0.2.3.jar
rubidium-0.5.1a.jar
scaffoldingdropsnearby_1.18.2-1.6.jar
scorpions-1-18-1.jar
selene-1.18.2-1.14.1.jar
ShoulderSurfing-1.18-2.2.2.jar
shutupexperimentalsettings-1.0.4-1.18+.jar
Snow_Pig-1.18.2-4.2.0.jar
spidersproducewebs_1.18.2-1.6.jar
StylishEffects-v3.1.0-1.18.2-Forge.jar
supplementaries-1.18.2-1.3.2.jar
TaxFreeLevels-1.3.1-forge-1.18.1.jar
tenshilib-1.18.2-1.6.5-forge.jar
TinySkeletons-v3.2.0-1.18.2-Forge.jar
ToolBelt-1.18.2-1.18.7.jar
VanillaHammers-1.18.2-4.1.1.jar
villagernames_1.18.2-3.5.jar
VisualWorkbench-v3.2.0-1.18.2-Forge.jar
Waddles-1.18.2-0.8.19.jar
waystones-forge-1.18.2-10.0.0.jar
worldedit-mod-7.2.10.jar

netherportalfix-forge-1.18-9.0.0.jar is the issue