sleek: Uncaught Exception TypeError when opening from the tray and minimizing

Describe the bug When I open it from the tray, I get the error Cannot read properties of undefined (reading 'show'), and the window contents won’t load until I click OK. After clicking OK, the window content can be displayed normally.

When I use the close button to minimize the window, I get the error Cannot read properties of undefined (reading 'hide'). Minimizing the window with the minimize button will not report an error.

To Reproduce Steps to reproduce the behavior: 1, Launch sleek. 2. Press close button. 3. Open from tray.

Do you see any error entries in sleeks developer tools? Yes:

Expected behavior When opening sleek from the tray or minimizing the sleek window, there is no pop-up error

Screenshots Opening from tray:

Minimizing via close button:

Desktop (please complete the following information):

• OS: Manjaro Linux Xfce
• Version of sleek 1.2.1-1
• Source: Arch User Repository