The front layer of the backdrop (session list) becomes empty and stays in the middle of the screen

[KeithYokoma]

Overview (Required)

• When opening search screen from session list screen and come back to session list,
• The front layer of the backdrop (session list) becomes empty and it stays in the middle of the screen

I have a screen recording so that you can see what I get in detail.

Steps To Reproduce

1. Go to the search screen
2. Click back arrow in the search screen
3. See the backdrop stays in the middle
4. And the session list is invisible

Expected behavior

• The backdrop position should be at the bottom (where it was right before opening search screen)
• Session list should be visible

Screenshots

Env:

• Device: Pixel 4 XL
• OS: Android 10
• Version: DeployGate #139 / 1.0.5 (1000500)

Additional context This is possibly related to https://github.com/DroidKaigi/conference-app-2020/issues/505 as I see the crash and have a crash report having the same stack trace.

[hirotakaakita]

I want to try it.

[e10dokup]

@hirotakaakita Thanks! assigned 🙋