Here is where I think many people make a mistake. By assuming that the investor drew back now. When all the signs for the past six months indicate that the investor drew back perhaps as far back as in May, and was definitely gone by August.

That's why there were problems with the tablet production and the display was just an excuse (perhaps with some truth behind it so not a complete lie but the main issue was money, not the display quality). That's why there were so many unresolved support cases. That's why Jolla went sudddenly so quiet, both on the tablet front and on TJC. (ZogG also keeps trying to hint in that direction but everybody seems to be stuck in the "surprise out of funds in November" loop.)

It was no surprise. They saw it coming but had to keep a straight face till the last moment whilst desperately trying to secure the funding and hope that they could cajole the investor back.

Ask not what happened in November that made the investor lose patience.
Ask what happened in May, June, July or August.