In version 3.7.6 and 3.7.8 of Claws mail for windows when clicking the information button under Configuration > Preferences > Compose > Templates causes the "Descriptions of Symbols" window to pop up however I'm unable to either with the mouse or windows controls scripts cause the window to become focused. While in Claws the preferences window remains active, when selecting the window from any other application the application/window in question simply loses focus and nothing becomes the current focus target.
*** This bug has been marked as a duplicate of bug 2077 ***