Opening the app for the first time, the directional light's shadow is invalid

jl1872002

I have a room with a bed inside.
A vertically downward directional light with an intensity of 0.2 was added to the room.
After installing the app on the iPad, when opening the app for the first time and then turning on the directional light shadow, I found that sometimes the floor becomes darker and cannot produce shadows.
Exiting the app and reopening it will become normal.
No action was taken during the process, and the code remained the same.

Testing continuous installation and opening the app 10 times will result in one exception.
Is this a bug with directional light shadows in Godot?
Version 3.5 of Godot.

This is a picture of the floor and environment turning black after opening the app for the first time:

This is a normal image after opening the app for the first time, or a normal image after restarting the app for the first time if there is an abnormality:

jl1872002

When the exception occurs when opening the application for the first time, I adjust the directional light intensity to 0.7 and turn off the shadow, which is very bright, as shown in the following figure:

In the above scenario, when I turned on the shadow, the directional light seemed to have been removed, as shown in the following figure:

After exiting the app and restarting, it will become normal
It only occurs the first time the app is launched

@cybereality Can you help me see if there is a solution? Thank you!

jl1872002

Replace with two cubes and one directional light.

When abnormal, as shown in the figure below:

Normally, as shown in the figure below:

axolotl

Sounds like a bug in the iPad version of Godot. You may want to check if that’s already filed as an issue in Github, and if not then file it yourself.