I have put 1400 miles on the bike since I did the 1.19.0 update, using a Mac. Here is some of what I found.
At first it did not fix the ACV, but it started working after the 3rd or 4th time I started the bike, and has worked 98% of the time since.
New High contrast for Day is an improvement, you have to press and hold the info button on the right hand and it switches. Its not perfect but it is easier to see. However when navigating when it gets down to half a mile the color switches and its impossible to read.
Also when navigating spoken turn and map match, but turn arrow is almost always opposite direction.
Takes longer to boot system up.
When using iPhone as iPod, and you shut the bike off half the time it does not restart the iPod, so this is a new problem for me.
If I receive a Text or e-mail on my iPhone it reduces volume so you can hear the notification sound like it always did. However now 25% of the time it does not return the volume to normal. Shutting the bike off and back on does not fix it. Un plugging and plugging iPhone back in does not fix it. Receiving a new text, e-mail or phone call does fix it. So a New Problem
Time zone for east TN still not fixed. Still thinks it central time, when its eastern.
Intermittent cut out of music still not fixed.
So all in all a slight improvement over the last version. At the rate Harley is fixing the issues, the new head unit will be out before all the bugs are out of this one.
As stated earlier, if this was a car, the issues would be fixed in weeks at most due to the lines at the dealer ship complaining and falling sales.