G’day @zoran ,
I note this particular issue was theoretically fixed 8 days ago, but I am still encountering the exact issue (off-by-one error for text selection) for newly imported lessons (as are other users per links here in the last 24h: BUG that makes it impossible to use the site - #4 by len1984 and New bug - Reader really screwed up today - #3 by scrubtaku ).
I appreciate it’s a complicated system, but this feature is literally the core feature of the website. For what can be quite an expensive paid product at the premium plus tier, it’s not really acceptable to have core features break. When they do, it’s also quite unsatisfactory to have the support/updates be this “responsive” rather than proactive.
Refreshing the page isn’t helping, nor are any of the other suggested fixed throughout this thread.