V/S not working correctly

Do you have any add-ons in your Community folder? If yes, please remove and retest before posting.
No!
Are you using Developer Mode or made changes in it?
NO!
Brief description of the issue:
after taking off and engage the AP a while, the V/S climb to +5700 suddenly.
Provide Screenshot(s)/video(s) of the issue encountered:
Not available, but it happened at 787 and FBW320 also.
Detail steps to reproduce the issue encountered:
set V/S +1500 after taking off , climb to 4000 and started to climb by +5700 up.
PC specs for those who want to assist (if not entered in your profile)
R9-5900 / RTX3080 / 32G RAM / 1T SSD
Build Version # when you first started experiencing this issue:
all updated
Are you on the Steam or Microsoft Store version?
MS store version
Did you submit this to Zendesk? If so, what is your ticket #?
not yet

A320 FBW vert speed not working when engaged via the AP and APP Hold to follow the ILS for landing…i have both the steam and MSFS version loaded from the MS Store… the steam version seems ok but not the download from marketplace FBW or default Neo

all fine before last big upgrade