Musescore 2 Beta no longer sets up Balalaika correctly: Musescore-25f25dd nightly did the job correctly.

Problems are multiple, below is a summary:

Balalaika E strings in musecore tab setup for 3 strings: pitches do not change when keyboard up/down keys are pressed, however the fret numbers on the 'e' string tabs do change
(Balalaika has two e strings)

Also, when entering an eg. E4 pitch note on the pitch scale itself (I have it above the tab scale) and then using the up/down keys to raise or lower the pitch, the fret number on the tab jumps down to the next e string tab.

After setting up Add > Instruments > Staff 2 > Balalaika 3 strings, pressing OK and then accessing Add > Instruments > Staff 2: again immediately afterward, it still reads STANDARD.... but the 3 string tab does appear.

Yes, when setting up the balalaika 3 tab (that is listed as a preference) I started with classical guitar and made sure the 3 string tab addition was linked. When changing classical guitar to balalaika the treble clef with the 8 at the bottom also needs to be changed for a normal treble cleff.

Long story short, setting up a Balalaika in Musescore 2 Beta has gone awry. I have tried it again and again, thinking the problem to be on my side.

Yes, the balalaika tab that I tried to enter is linked.

After trying this many times, I finally did a factory reset and then attempted again. Same problem. Yes, I have setup right click on Staff > Staff Properties > Edit String data to 3 strings. A4 E4 E4.

Nightly '25f25dd' works perfectly when setting up for balalaika.
The only problem I have is that when I enter a note on the pitched scale and it should appear on an e string tab, it then goes and chooses the centre e string, rather than the bottom one (this is actually a separate issue).

Musecore 2 has gone backwards as far as setting up a Balalaika is concerned.
After trying this many times, I finally did a factory reset and then attempted again. Same problem.

I thought by now 'Prima Balalaika' would be listed in the add instruments setup left hand panel.

Hope you can sort this all out.
I have attached the file created with Muse 2 beta. It is called 20141012test_after_factory...' this is the problem one.

The nightly: '20141011 - balalaika done in nightly 25f25dd that works.mscz