Just another update.
It worked fine all day yesterday and it was also fine during sleep last night.
Unfortunately, I went out three times this morning and on the last occasion, I have found that autosync has turned off... it is difficult to replicate this issue but probably has something to do with WiFi being disconnected or switched off as this seems to be only variable now?
I have a few bixby routines, but cannot see anything that may cause an issue?
I will install the latest version over the beta now. Thanks