**Steps to reproduce:**
- Enable "Discussion tools" in [[https://en.wikipedia.org/wiki/Special:Preferences#mw-prefsection-betafeatures|Preferences → Beta features]]
- Go to a talk page on mobile view, e.g. [[https://en.m.wikipedia.org/wiki/Talk:Persuasion_(1995_film)|Talk:Persuasion (1995 film)]]
**Actual results:**
- No sections are shown under "Active discussions". If you click "Read as wiki page", the sections appear but they are not collapsed and cannot be collapsed.
**Expected results:**
- The sections appear under "Active discussions". If you click "Read as wiki page", the sections appear in the collapsed state.
Reported in [[https://en.wikipedia.org/wiki/Wikipedia:Village_pump_(technical)/Archive_189#Could_This_Be_A_Glitch%3F)|Wikipedia:Village pump (technical)#Could This Be A Glitch?]]