Add known issues to readme

References #47
References #52
References #64

README.md

@@ -29,6 +29,12 @@ This is a clone of the [Workspace Grid](https://github.com/zakkak/workspace-grid
 
 The easiest way to install this extension is via the [GNOME Shell Extensions](https://extensions.gnome.org/extension/1485/workspace-matrix/) website.
 
+## Known Issues
+
+- **extensions.gnome.org shows ERROR after an update of this extension:** Restart GNOME Shell by pressing <kbd>Alt</kbd>+<kbd>F2</kbd> and running the `r` command. ([#52](https://github.com/mzur/gnome-shell-wsmatrix/issues/52))
+- **My windows jump between workspaces when the machine is locked or suspended:** Disable the extension, set workspaces to "static" in GNOME Tweaks and then enable this extension again. ([#29](https://github.com/mzur/gnome-shell-wsmatrix/issues/29))
+- **The keyboard shortcuts of this extension are incompatible with my custom shortcuts:** You can configure the shortcuts with the `gsettings set` command ([example 1](https://github.com/mzur/gnome-shell-wsmatrix/issues/47#issuecomment-522951600), [example 2](https://github.com/mzur/gnome-shell-wsmatrix/issues/62#issuecomment-539555329)). ([#47](https://github.com/mzur/gnome-shell-wsmatrix/issues/47))
+
 ## Contributing
 
 Pull requests for issues that are marked as "bug" or "help wanted" are always welcome. If you want to implement any other new feature, please open an issue about this first. See the next section on how to get started with development.