Are there any chances the fix will be available in the upcoming release?
Yes, this issue has priority of Critical, so there's a qiute good chance it'll be fixed in the next release
This is provided by MariaDB-compat, and you cannot install MariaDB-shared without MariaDB-compat, because -shared requires -common, and -common requires -compat.
Either you build MariaDB* packages yourself (and without MariaDB-compat) or you installed -shared with --nodeps. I don't see how else you could've got MariaDB-shared installed without having libmysqlclient.so.18()(64bit)
I don't know if this will be considered off topic, but I'm running into the same problem with MariaDB in Debian derivative Raspbian Buster. Got a program that can store data in databases, but depends on libmysqlclient.so.18 which doesn't seem to be included with MariaDB.
I missed that MariaDB-compat rpm provides those libs 
I'm very sorry, but indeed everything is fine.
Thank you!
bartgrefte, yes, this is an issue about RPM packaging. DEB packaging is implemented independently from RPM, so your problem must be unrelated to what we did here. Please, report a new bug for it and we'll take it from there
@Sergei Golubchik
