The release of the final version of MacOS Catalina is almost imminent, after the Golden Master beta was released. The new operating system for Mac is a very drastic change, especially when it comes to applications. As you already know, 32-bit applications will stop working to make way for 64-bit ones. In principle, Logic Pro X will have no problem running on this new version of MacOS.
However, it may not be as fine as you should expect for The fault of the third-party applications that have not yet been updated to the 64-bit system and the new security systems. So it is highly recommended to wait to update the operating system on your Mac, until you are not sure that all the applications you have installed work correctly.
Logic Pro X may run erratically but it's not the app's fault
All of us who are looking forward to the final version of MacOS Catalina, We should bear in mind that some of the applications that we have installed right now may not work at all well. Logic Pro X users should also keep in mind that projects they have invested so many hours in can go to hell.
Catalina will be a much more secure software than the current ones. This increase implies that third-party programs must be updated correctly so as not to generate problems. In the special case of Logic Pro X, we have Native Instruments' popular KONTAKT sampler. It should be up to the task when we access the library files and the like from it and it does not produce errors that are difficult to save.
Our recommendation is that you do not install the new Apple Software on the first day, many of the add-on companies for Logic Pro X such as ROLI, Native Instruments, iZotope, Elektron, IK Multimedia, Steinberg, Soundtoys and many more have issued formal warnings to music producers stating that their products are not yet ready for the latest version of Apple's macOS.