HI, been frustrated (but not put off) by this issue for a couple of weeks now. Sometimes logging out then back in again would sort it (IE routes were back) however there was no consistency. Multiple logout/login cycles would fix it, sometimes quiting and relaunching, sometimes verifying from the launcher, sometimes all of the above!
I now have consistency (well three rides out of three anyway), running the benchmark test from the options menu (see uploaded screen grab) brings up all of the routes when some or none were showing. I’ve always run the benchmark test for picture quality (not tried the other options as a fix).
Maybe somthing in this , may be not but thought I’d share