I have a rule that speaks a single word and then a wait and then speaks the rest of the sentence. The rule completes this but at the end of the speech it also repeats the first word again.
Ex. attention, wait 1 sec., the garage double door is now closed. Then it repeats the word attention again. Speech should end with the word closed.
It does this in BR and in RM. I created the same rule in both and it repeats the word in both.
[EDIT] I might have found the issue. If I change the wait time from 1 sec. to 2 sec. it does not repeat the first word.
Okay I get it. I must still be on the "Stubborn One" list! 
@bravenel I am just wondering if you saw this thread or not. It still may be worth looking into.
Please post a screenshot of the logs from the rule running.
Here is the logs.
app:24892022-06-25 09:51:01.165 am infoapp: When Garage Double Door Sensor opens …
app:24892022-06-25 09:51:01.163 am infoapp: Finished
app:24892022-06-25 09:51:01.115 am infoact: Speak on Living Room HE Sonos 'the garage double door is now open'
app:24892022-06-25 09:51:01.070 am infoevt: Wait time is up: 1 second , wait over
app:24892022-06-25 09:51:00.044 am infoact: Wait 1 second
app:24892022-06-25 09:50:59.993 am infoact: Speak on Living Room HE Sonos 'attention'
app:24892022-06-25 09:50:59.943 am infoevt: Wait time is up: 12 seconds , wait over
app:24892022-06-25 09:50:47.987 am infoact: Wait 12 seconds
app:24892022-06-25 09:50:47.949 am infoevt: Garage Double Door Sensor contact open