[5.0.0.71] Overlay display blanks screen (e.g. with reminder or calls) only flickers for call on button press

Bug Reports
1

REPRODUCIBILITY: always
OS VERSION: 5.0.071
HARDWARE: Xperia X10 II
UI LANGUAGE: German
REGRESSION: yes

DESCRIPTION:

Once an overlay is shown like when a call is active or a reminder for an appointment triggers, the screen stays blank. And it does not accept swipes or presses.

With a reminder, this can be remedied by pressing the button three times.

During a call there is no way out I've found, so it is critical.

PRECONDITIONS:

This started happening after the upgrade to 5.0.0.71.

STEPS TO REPRODUCE:

  1. initiate a call

  2. (alternatively) create an appointment with a reminder and wait until it fires

EXPECTED RESULT:

The overlay with the reminder or call information should be shown and accept swipes or presses.

ACTUAL RESULT:

Blank screen.

MODIFICATIONS:

ADDITIONAL INFORMATION:

The situation stays the same after a reboot.

2

Seems like sensorfwd is stuck. It happens too often on my C2 as well. But it did on my Xperias as well.