[Zenfone 5 ZE620KL] Blank area on home screen

[iwatabufd]

Please tell us some basic information before asking for help:
Model Name: ASUS_X00QD (zenfone 5)
Firmware Version: WW_16.0615.2004.126
Rooted or not: Not
Frequency of Occurrence:
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
========================================
my system on android 9 (pie)
when new update release from asus...
for asus zenfone 5 (ze620kl) is release on Apr 20th, 2020
with version WW_16.0615.2004.126
i'm immediately upgrade my system software via OTA..
i found odd problem that in navigation area in home screen
i'm using gesture navigation model..
but the bottom icon is not normally on the bottom area... but now have a big blank bar area.

i hope it's fix immediately, thanks.

[iwatabufd]

Base on few comment in this forum..
i found solution to make the display correctly...
that picture that i share, is base on display setting "small display size".
( note: when i upgrade my system to new, my display setting on small display size).
now i try to make "default display size" first
than back again to "small display size" on display setting.
and it can fixed this problem.
Case closed.

[iwatabufd]

but now have 2nd problem that can not be fixed..

that the 2nd menu from home screen, at the header /top row, icon search and mic, is overlap with status bar ...

[iwatabufd]

case close.
since asus release update version on May 28th, 2020.
ZE620KL_WW_16.0615.2005.130
Thanks Asus.