The "custom value" of "Line spacing" in Toolbar can not be changed.
when clicking on "Line spacing" icon in Toolbar, we can see "custom value" field in the pop menu. If we chose the "proportional" line spacing, the "value" field will display "100%", however, the "value" field can not be accessed, so we can't change it to 125%, for example. For "at least", "leading" or "fixed", the problem also exists.
However, we can change line spacing from menu "Formatting - Paragraph - Line spacing"...
I can change value with arrows. You want write the value via keyboard?
Created attachment 124179 [details]
the screenshot of pop menu (line spacing)
(In reply to raal from comment #1)
> I can change value with arrows. You want write the value via keyboard?
How do you change the value with arrows? Do you mean mouse? No, I can not put the mouse into the value field. Because I can't put mouse into the value field, I can't change the value via whatever.
I uploaded a screenshot of the pop menu, so I could be understood what I said.
Please upgrade to actual version / in this version I have arrows.
Let us know if you have arrows in actual version.
After upgrading to 5.1.2, I can change the value via the arrows. The step of each click is too large, so we can't finely control the line spacing. It also can't be changed via keyboard. Luckily, we have the "Formatting - Paragraph" menu.
I can confirm that the "Proportional spacing" text widget is not selectable by mouse and also not editable by keyboard.
Version: 18.104.22.168, OS: openSUSE Leap 42.1, x64