Viewport brightness/contrast adjustments broken in Big Sur?

Support
1

Hi there,

After the Big Sur update on my Mac I noticed that clicking and dragging over viewport windows with slices does not change the image brightness/contrast as it used to.

Is this a bug or did I miss a migration of this feature to the Volumes tab?

2

Did you also upgrade your Slicer version too? For a while now you need to use the window/level mode mouse mode (see below).

3

Hi, thanks for the link.
My Slicer version is 4.11.20200930
With the mouse mode selected

image
image1024×914 100 KB

Ctrl+click’n’drag zooms the image and Cmd+click’n’drag and simple click’n’drag do nothing

4

You need to click “Adjust window/level” button on the toolbar - see https://slicer.readthedocs.io/en/latest/user_guide/user_interface.html#adjusting-image-window-level

5

Thanks! I definitely missed that.
It used to be on by default