As the first ticket has been closed, I'd like to ask the question again, as the original request is 7 years old and I hope there might be a solution now.
You know, there are three preset options
(currently the middle (300px) is selected)
We have different standards and it is quite annoying (yes, I know it's possible) to type in each value manually.
Where can I set the three standard values? Probably in the source code but maybe as a CSS/HTML preset somehere?
Maybe in the dark settings of the source?