I use WSL on my windows laptop and am perfectly fine to use spyder via VcXsrv. Current version: 4.0.1 - if I try to update to a newer version it tells me that 'all requested packages are already installed'. Additionally, I updated anaconda as suggested. I use python 3.7.9
However, there is neither code folding happening in the editor, nor can I activate it via tools-> preferences-> editor, tab 'display' where it is supposed to be. Searching for an answer, I found that other people also seem to be missing this option.