Weather stops working after Admin Mode Teleport?

I set all graphic settings to high/exteme, I created a new Red Ship Creative world, enabled Admin Tools, added Mars, Earth, Europa, and then I used the /weather commands.

First impression on Europa and Mars:

• Overall the effect does what it says on the tin.
  
• I noticed the sun also had a good looking effect shining through the weather.
• It snows less in caves (better than in mods).
• Fog makes it very foggy even indoors (I only tested a blocky box with one window and a door). I don't know how hard this is to implement, but I expected no fog indoors. Maybe we have to pretend that this is a thick atmosphere and not fog.
• And when flying straight up "above the clouds" all the weather just disappeares. ;-(
  

Mars test:

I drilled 300 degrees of a spiral-like hole (RMB) on Mars, and the furthest-away deepest end of the cave is usually in complete darkness. With Fog or snow it was lit light-gray in the cave and in indoors. At night or in the dark, fog should not be light-gray?

Then I parked a small grid vehicle with 4 spotlights facing the ground above the cave end, and switched the engineer's torch off. With the spotlights on it was almost daylight in th cave. Indepenent of weather Clear or Snow, day or night. Never noticed that before, not sure if that's old or new light behaviour.

Frozen game:

I used the admin tools to find an economy station and the game stalled, "not responding".

In general:

After (restarting and) teleporting to any planet via spectator mode, the engineer was either walking on top of 1 m of invisible ground, or at other times, she was sunken into the ground. Everything was quite pixelated too at first, and one planet in the sky had a 1/4 of the surface missing. After a minute of walking, the ground was at normal foot level again and the textures started loading normally. Not sure if that's old or new.

Earth Test 2:

On Earth I tested snow on a hill, and then I used Admin Teleport mode to travel to economy stations because I wanted to see the weather through large windows and inside safe zones, and in the savannah. But since I teleported on Earth, the Weather effects have disappeared. The console still claims "you are now experiencing heavy snow at your location" etc., but nothing. I reloaded the save several times and could not get the weather to work again. Didn't see any error messages.