When logged into the report editor server via RDP, the keyboard keys seem to be mixed up. Pressing Q shows A; pressing W shows Z. Not all keys behave like this.
Typing outside the reporting server window works as expected.
The keyboard layout has been switched to French if the top line reads AZERTY instead of QWERTY.
Press Left Alt + Shift to switch between installed keyboard layouts.
Alternatively, go to Start > Windows Security, then select the appropriate keyboard layout from the menu in the top left corner.