Screenshot
Steps to reproduce:
1.Add a link
2.Apply format on it like Bold/Strikethrough
3.Now add a space right after that and add a text
Observed Result:
An error appears in the console Uncaught TypeError: Cannot read property 'constructor' of undefined and the text gets added in a weird way: One letter appears before the link and some letters gets typed inside the link text
See the screenshot attached
Test Environment: https://test2.wikipedia.org/
Browser: Chrome Version 26.0.1410.65 & FF 25
OS: MAC OS X 10. 8. 5
Page:https://test2.wikipedia.org/wiki/31stMarChrome?veaction=edit
Version: unspecified
Severity: normal
Attached: