In Ubuntu 18.04, ipa-dns-intall (or ipa-server-install when asking to configure BIND) does not create reverse DNS zones for my domain. Note that I already fixed (or more correctly, circumvented) other bugs involving BIND, such as https://bugs.launchpad.net/ubuntu/+source/freeipa/+bug/1769440.
The problem seems due to the presence of systemd-resolved. When ipa-dns-install valuates whether to create a reverse DNS zone, it tries to use the local DNS for resolving the IP address of the server. When you want to install BIND alongside IPA, this normally fails, and the installer knows he needs to configure an appropriate reverse zone. But when systemd-resolved is active, it takes the role of local DNS and answers this query: therefore, the installer thinks a reverse DNS zone is already present.
To fix this problem I had to perform the following steps before calling ipa-dns-install (or ipa-server-install):
1) stop systemd-resolved with "systemctl stop systemd-resolved".
2) disable systemd-resolved with "systemctl disable systemd-resolved".
3) delete the file "/etc/resolv.conf", which is a symlink to a file created by systemd.
4) optionally, recreate "/etc/resolv.conf" pointing to the (real) local DNS.
Fedora doesn't enable systemd-resolved, which is probably why this hasn't been hit before. It was proposed but apparently shot down.