1609891 - Copying multiple highlighted CSS lines in Inspector that includes a color picker is introducing a newline

Status: RESOLVED DUPLICATE of bug 1597125

(DevTools :: Inspector, defect)

Description

[Kestrel]

STR:

1. Highlight multiple lines of CSS in the Inspector while including at least one color picker icon.
2. Copy into clipboard (Ctrl+C).
3. Paste into text file.

Expected:

--bug-status-color-open: #188716;
--bug-status-color-closed: #1B6AB8;
--bug-type-color-defect: #EA3C3D;
--bug-type-color-enhancement: #2ABA27;
--bug-type-color-task: #2886C9;

Actual:

--bug-status-color-open:
#188716;
--bug-status-color-closed:
#1B6AB8;
--bug-type-color-defect:
#EA3C3D;
--bug-type-color-enhancement:
#2ABA27;
--bug-type-color-task:
#2886C9;

The color picker is introducing a newline when copied. This only happens when copying multiple highlighted lines, single lines do not have this issue.

Regression range:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=57281d612fe193877b53a1432dbf6a73f180aaa9&tochange=83881815f007452eeacfd248be7ca22a29cf3341

Regressed by Bug 1478156.