freezes when nixie placed on a surface and map opened. tested in a new save, with the rounded (forgot the name) nixies.
game version 2.0.21, mod version 0.2.2

happens specifically on mod ver. 0;2.2 only

I confirm.
Also, after removing blocks of tube, numbers remain in their place, which are considered entities and do not make it possible to place blocks.

I will look into both issues as soon as I am able to. Thank you for reporting these.

Both issues are fixed in 0.2.3.

Still hangs on map view.

Can you give a more detailed description of what exactly is happening when?

It is fixed now. It actually entered an infinite loop, which I fixed.

That was part of the performance improvement where it wouldn't render any tubes that nobody was able to see because they're not looking at that planet's surface, which is also the case when you enter the map view.