Was beta a bit too early?

I don't want to sound negative here, but is this current MS4 beta really on par with a betta release level? I have never seen a beta version of a new version of software that would phenomenally crash so often as opposed to the previous version. My scores lose their specified volumes and panning almost every time a start a new editing session. Now it has become already like a habit for me to start any new session of working on my score by firstly restoring all the volumes and panning settings manually (!) Besides, every time when I open a file that I saved the night before, I am in fear and tremble to see that "the-file-is-corrupt-open-anyway" message, which if clicked on "open anyway" button won't result in anything - the file simply doesn't open. Now, in addition to recording (with a pen on a piece of paper) the new volumes and panning in the end of each editing session, I also have to save my file in .pdf format - to save all the latest modifications, which, if the file doesn't open again, I will also have to restore manually. I had none of such troubles in MS3.

I am sorry if I am coming across ranting. I fully realize that MS4 is a free piece of software and, thus, I have no right to complain. And I don't mean to complain. The new instruments, the playback and the interface of MS4 are just amazing! Instruments' sound improves daily and to me instruments already sound better than I could ever imagine - way way better than in MS3. Besides, at least, one issue that I had reported on GitHub has already been solved. So, the team IS working hard and I can only commend them for doing so. But I am a bit surprised by these crashes in the beta release. Do you think that they jumped the gun a bit with beta? Could all these crashes have been envisaged during the pre-beta days in the nightly builds? Or is it like the crashing problems became evident only after and thanks to the beta release? (my impression is that after the beta was announced the crashes have ironically become more often then during the pre-beta days)