This forum thread should be labeled as Turris OS 3.x and the same thing is in Turris OS 4.x, but we are not going to release it as @vcunat pointed out we are focusing on Turris OS 5.0 release when it is fixed.
Issue for Turris OS 3.x:
Issue for Turris OS 4.x (based on top of OpenWrt 18.06 with our patches and feed):
If you would like to use Turris OS 4.x or lately 5.x, we are still working on automatic migration and in the meantime, you can use re-flash method as described in our documentation. Update from 4.x to 5.x won’t require re-flash and it will be handled automatically.