Using Tridion Docs SP1 client tools it is no longer possible to toggle HTML view towards XML view in the Browse Repository or Preview window. The HTML appears nicely, but when doing right-click and switch to XML, the window remains empty. No error appears.

Hotifx: CRQ-10297

Please open a support ticket to request this hotfix:
When the hotfix has been emailed/sent to you, follow the steps below:

1. Right-click the file "20180619.Hotfix--CRQ-10297.ClientTools.13.0.1.exe" and select "Run as administrator".
2. You do not have to restart the computer after you apply this hotfix.
3. To make sure that this hotfix is applied successfully, close all Client Tools, apply the hotfix, and then reopen the Client Tools.

64-bit GeckoFx crashes because of a known Bug