Lava "fog" doesn't appear when entering lava in creative mode, (may also require switching to /game mode 6 before hand

Observed results:
When in creative mode and entering a lava pool, the orangey fog doesn't show on screen but the fire effect still does.

Intended results:
Fog and fire effects should be on screen.

To recreate, Find lava pool, /game mode c, (may need to use /game mode 6 before hand), enter lava pool.
Also occurs in 1.19.0.20 beta