Fix LT-21870 and LT-21872 and boundary markers #273

All 2 793 tests pass, 20 skipped in 1m 33s

8 files ±0 8 suites ±0 1m 33s ⏱️ -5s
2 813 tests ±0 2 793 ✅ ±0 20 💤 ±0 0 ❌ ±0
5 626 runs ±0 5 549 ✅ ±0 77 💤 ±0 0 ❌ ±0

Results for commit fb465e1. ± Comparison against earlier commit 74343ed.