What I noticed on the last updates:
Improvements:
With the latest updates the problem of not being able to find streets starting with "A" is solved.


Not able to find addresses in cities that have an "Umlaut" in their name:
I am not sure if this was already working or not
In the "search address" if you only search for a street name, you find the address. When adding however (the correct) the city also, no address is found anymore. There seems to be the problem that in the city index,cities are registered WITH Umlaut. In the full address WITHOUT Umlaut.
I cannot enter "Moedling" to search for a city / not accepted as city in the address tab. However address is fund like this:


I have noticed this problem in all  cities with "ö" in their name (5 cities) that I have tried out.


"French" Accents like é do not pose problems in Mapsource (can't retest on gps because most tiles in France cannot be transferred to GPS).