Autocheck or Autoselect of test mode is inconvenient and not ideal

After a replace is run, the dry-run checkbox is re-checked, which is problematic because the enter key still submits the search. On large installations this results in a possibly unnecessary but definitely time-consuming dry-run.

A better way to prevent accidental or unintentional submissions is to disable the enter key as a submit shortcut. If you are still concerned, add a confirmation dialog when not in dry-run mode. This will avoid incorrect submissions while also preventing unnecessary time-consuming submissions that are not handled in any way right now.