I had similar behavior with old firmware releases.
After updating 3 times, now the last two bars last longer and I do not run directly in red flashing conditions.
Take a look at the following link:
ファームウェア更新情報 詳細｜E-TUBE PROJECT｜シマノ
Merida eone sixty 900e. Walk mode powerful and a bit to fast. But it can pull me up and I appreciate that. Never stops. The Bosch I had before did stop pushing to easily.
First 500 km, no problems.
Then started intermittent problems: the electronic rebooted while riding.
After some more time , the bike was standing against a wall, I heard a beep beep. E010. Power off and on and ... try to guess ? w013.
I made other undreds km with these problems (not on every...