I just tried a normal patch process using the canary 24309 downloaded today and it works without disabling anything. The changelog mentions support for A13B2 so it seems dev has fixed it! great work.Can you tell where you saw such a report? I am watching this closely as I want to try the A13B2 but do not want wipe my data.
steps are as per usual: patch the original boot, bootloader patch boot magisk.img