Hello! Yes I read https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=875890#30 but picking a solution, testing it, ensuring there are no regressions etc is not always straightforward, in particular if the domain and problem itself is not previously very familiar.
Maybe this would be a good opportunity for you to contribute and submit your suggestion for a fix as a Merge Request at https://salsa.debian.org/mariadb-team/mariadb-10.5? Thanks!
