3 cases here:
Widget is blank after reboot. It need app to be open to be refreshed.
Widget gets blank after some time. It's loading after manual refresh.
Widget gets blank by itself or due to reboot but it's impossible to refresh it. Only helps when it's removed and placed back on screen.
Device Xiaomi Mi 9T Pro 64 GB
Android Version 10,
Xiaomi MIUI version 11.0.3
API Level 29
Security Patch Level 2019-10-01
Build ID QKQI . 190825.002 test-keys
Java VM ART 2.1 .O
OpenGL ES 3.2
Kernel Architecture aarch64
Kernel Version 4.14.117-perf-g8035d1 a (VI 1.0.3.O.QFKEUXM)
Root Access No