Intuit is still supporting the desktop software. There were some articles last year about ending support for the UK version of QuickBooks Desktop for Windows. But that doesn't apply here.

The first thing to recognize is that the major change to your system is Ventura. The crashes while printing we have isolated so far to be caused by graphics in your form (Invoice, etc) that aren't at the background level. The workaround is to go into Layout Designer, select the graphic elements, and arrange them to the background. Can you give that a try?  As far as we can tell that is a Ventura bug and not QB Mac.  But first lets see if that is the issue you are seeing.

I'm not well informed on the multiple tabs issue - only that we fixed it prior to shipping the updates for Ventura compatibility.  It also was something that only began in Ventura.  It sounds like it isn't fixed on your system which implies some difference in configuration between your system and our own.  Lets try wiping out the window save list and see if that helps:

1. Quit QuickBooks if it is running

2. Choose Go->Library in the Finder menu (You have to old the option key down to see the "Library" option

3. Open the Preferences folder

4. Drag all files that begin with com.Intuit.QuickBooks to the trash (for instance com.intuit.QuickBooks2017.plist)

5. Relaunch QuickBooks - did that improve it?

If that doesn't work, perhaps you have some utility or language software installed?  Try a safe boot:

https://support.apple.com/guide/mac-help/start-up-your-mac-in-safe-mode-mh21245/mac

Once in safe mode launch QB Mac and see if the problems still occur.

Let me know what you find and we'll pursue it further.