[html] Leading space character is removed when range formatting #58693
Description
Version
Version: 1.27.2 (user setup)
Commit: f46c4c4
Datum: 2018-09-12T16:17:45.060Z
Electron: 2.0.7
Chrome: 61.0.3163.100
Node.js: 8.9.3
V8: 6.1.534.41
Architektur: x64
Steps to Reproduce
Example: <a class="btn"></a>
When i paste some text from clipboard with leading space e.g. " btn-link" the space is immediately removed.
Result: <a class="btnbtn-link"></a>
Expected: <a class="btn btn-link"></a>
When I undo, the space is back there.