Hi there,
I won’t deny you 
the pleasure of researching that exact question, WHY?
I will say" they Espressif had an alpha, & beta BSP before the 2.0.14" and some older code doesn’t 
go well. I like 2.0.8 , but that’s just me. I don’t suspect anything or everything, You do you 
and I’m sure it’s fine.
GL 
PJ 
You may be correct about the charge controller, and require additional code to support fully the deep sleep?