Thanks for your comments. Regrettably, toggling the Integrate RapidWeaver integration button has no effect.
Initially I discovered this upon a fresh install in a subdirectory on my localhost server. Once discovered I reconfigured my system and re-installed v5.3.5 in a root directory. Again the problem existed - hence my prompt report questioning what may have changed!
Since reading your comment about RapidWeaver I have revisited my localhost environment, toggled the selection and observed no change - the addition of /page/ persists on the PREVIEW button.
I have also uploaded to a live server and noticed the same occurs!
PROBLEM SOLVED using Version 5.3.6. Thanks Folks!
Blessings
AceTutor