Version: (using Devel) Installed from: Compiled sources OS: Linux If task manager is removed from the taskbar and then replaced (drag-drop from Widgets palette) it is recreated with tiny buttons (approx 1cm across, 0.5cm tall on this system) showing small icon and first few letters of the window name. This is only temporary and is fixed following restart. Adding/removing the task manager repeatedly has no effect. Task Manager continues to take up the same amount of "total space" on the taskbar - i.e. it can be right-clicked over the entire expected space. Adding/removing taskbar to the same location should recreate same appearance. Thanks,
Small addition: The remove/replace isn't making all the buttons small, it's making maximum space used for the tasks small: effectively the same size as the K icon (probably width=height). The difference is that it means only one single task button, scaled to a small single line, is shown. The actual plasma container "task manager" remains the correct size, so it looks as if internal record of the space available is being borked.
This appears to be fixed. Please reopen if it is still an issue for you.