The next upload will fix this problem. The relevant commits in the git repository are:
https://salsa.debian.org/debian/bash-completion/commit/c9203c53ea75d6fe708bf2deb82f1341072a97db https://salsa.debian.org/debian/bash-completion/commit/e55d81a56ae89ee0b9cd3bc1e6fc683a33c17991 https://salsa.debian.org/debian/bash-completion/commit/7d413831f1a8ac1181f21efdae594fc8ac5ec0f3 https://salsa.debian.org/debian/bash-completion/commit/2c23594b23c00a663e396d185922e577881e7d16 https://salsa.debian.org/debian/bash-completion/commit/e1319b586bca130e9fbd6e1c927e3ae8fb970a94