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Every time one switches between a connection eg Dev and prod whilst having a piece of code open in the editor, the cursor position jumps back all the way to the top.  If you have 1000s of lines of code open, this is very very frustrating and time wasting. 

After Teradata Studio has been open for a while, it starts lagging excessively when typing. 
There is approximately a half-second delay between each character that is typed into the editor. 
If I close the application and restart it, the problem is resolved for a short while until it starts again.