K8063 (My) errors (I think)

Hi all. 1 things on K8063. I have 4 for a number of 4 digits.
For me was impossible to blank the leading "0"s of a 4 digit cause the commad ‘A’ 32 (blank digit) don’t need strobe (not documentated ) this become a fliker for the others digit when I use strobe for other 3 digit!!

Is it true?

Many thanks
G