In the Knowledge WYSIWYG Editor you can change the size of the inserted images only with the Internet Explorer. This is not possible for Chromium Edge browser. This is seen with both 17.2 and 17.3 German install.
1. Create Knowledge Document and click on Edit Resolution button.
2. New window will be launched and allows us to insert images.
3. From main menu select Insert ->Image
4.Try to modify the size the image and it is not possible using Chrome edge browser.
5. Issue is seen with both 17.2 and 17.3 SDM install.
As a workaround can use Internet Explorer or Firefox browsers.
Release : 17.2 and 17.3
Component : SERVICE DESK MANAGER
This is a known defect and is currently under investigation by Engineering team with defect id - DE52975
Kindly raise a case with support to know the status of Defect.