The behavior you describe is a function of the IntelliSense "auto list
members" feature. You can work around the annoyance by disabling "Auto
list members" for HTML. Note: you can also do this for other
To disable "auto list members" for HTML go to:
Tools > Options > Text Editor > HTML > General:
uncheck "Auto list members"
Unchecking this option will prevent the "jumping" behavior you describe
but will also prevent the IntelliSense list from automatically displaying.
Probably not a big deal since you can just press CTRL+J to display it when
you need it.