Can't resize or move windows on Raspberry Pi

Question

I am using the Raspberry Pi Model 3 B+ and there was recently an update( I did not record what it was doing or what it was called) and upon reboot it mentioned that there was a previous version saved somewhere(did not take note of where this was at). Not thinking much of the update I tried to move windows around and they would not move. I found to try the Alt button and dragging and that is not working.

When I open up a tab for the terminal, or Idle the window drops down in the top left corner below the taskbar. When the internet is opened the window appears the top right corner. When texteditor is opened it is opened with only a little of the top of the window showing in the bottom of the screen.

I am using HDMI connection to a Sony TV, 2.4G Keyboard. Not sure what other information you will need. Along with this update the Raspberry Pi "Berry" in the taskbar has dissappeared and replaced with an imaginary icon. Any suggestions?

Answer 1

I'm unsure why the issue occurs, however a quick fix I found out was to go to Appearance Settings, Click the 'Defaults' tab and select an option.

Answer 2

A bit of detail inspired by Amozark's answer. This on fully-updated Buster-10 on a Raspberry Pi 4 Model B Rev 1.1

I did find a cause in my case: Openbox Configuration Manager (obconf) let me set window colors, decorations, etc., but disabled min/mix/close/sticky buttons and windows cannot be dragged. How I got obconf to show when right-clicking on desktop, I don't know, I was trying to adjust overscan and font sizes.

The problem can also be recreated by opening a terminal window and running /usr/bin/obconf in which merely choosing a theme will cause the symptoms.

The fix click path is:

1. Applications Menu button
2. Preferences
3. Appearance Settings
4. Defaults (tab)
5. Click one of "Set Defaults" (three choices depending on your screen size)
6. Press "OK" or just close window.