Something keeps pasting the database name in to the SQL editor

Something in HeidiSQL keeps pasting the name of the database in to the SQL editor / query tabs. It's annoying and been happening for years! I went through the Preferences ⭢ Shortcuts however nothing stood out. I found a couple of paste options though it's just the normal paste functionality which is fine. Thoughts please?

You probably mean the "doubleclick inserts node text" feature. You can disable that in the tree style options:

Ansgar, thank you! To save time when Windows has to be reinstalled I do a lot of work with registry settings. Here is the setting for anyone else who wants to quickly disable it during that process:

[HKEY_CURRENT_USER\Software\HeidiSQL] "DoubleClickInsertsNodeText"=dword:00000000