Data loss while using the app (dialog disappears on-screen rotation)

[davirec]

When I perform these sequences of events, the dialog disappears on-screen rotation:

1. Go to the Main activity
2. Tap in Settings
3. Tap in Search Window (km)
4. A fragment similar to this will appear:

5. Force the pause from the activity and then return to the activity (double rotation). Note that the fragment disappears. Note: the pause from activity can be performed in several ways. We suggest using a double rotation (starts in portrait, goes to landscape, and back to portrait) with this function previously enabled in the smartphone.

The expected behavior is the return to the previous state with the fragments of the previous image.

However, the fragment disappears.

Device:

• Device: Mi5X with OS: Android 7.1.2
• Device language: English

[davirec]

Hi, I found another failure in the MainActivity activity performing the same procedure of the double rotation. A blue line disappeared after the double rotation.

Before rotation:

After rotation:

Note:

• Double screen rotation: It is executed twice to reach a state that should be exactly the same as the screen before if no data loss occurred.
• A data loss problem occurs when data is accidentally deleted or state variables are accidentally assigned with default or initial values.