Moto G5+; OsmAnd+ 2.75; offline downloaded map - California, Aug31 2017; 
safemode

I am just learning smart phone use and starting with OsmAnd - so I don't do 
things very efficiently and may not be using the app in expected ways. But. 

This morning after OsmAnd had been running for about 2 hours, when trying 
to define a route (not moving, before I started driving) I repeatedly got a 
loop where the screen changed orientation from vert to horz and back at 
about 2 Hz when I selected the Go at the bottom of the dashboard route 
entry dialog; or sometimes it started when I selected the "To" item on the 
dashboard routing menu. When this happened, each time the screen flipped it 
displayed a black/white time display in large numerals in the top or left 
half of the screen, depending on the new orientation,  with a large white 
box below/right, for about 1/2 second; then the usual map display appeared 
for 1/2 second, then it flipped back and so on. Sometimes changing phone 
orientation (physically) stopped the loop while other times it did not. 
Screen touch control appeared to not work during the loop. Sometimes this 
happened after starting to drive and in that case routing announcements 
continued ever though the screen was going crazy, flipping back and forth. 
When I couldn't get control back by touch or changing phone orientation 
physically, I had to manually power off the phone and this took much longer 
than usual - as if a lot of cpu power was being used elsewhere. The 
fingerprint sensor on this phone which works also as a 
left-swipe/right-swipe/press control did not function while the screen was 
looping.

So far I have not experienced this at any other time with the phone and 
trying it again later while stationary I can not repeat it. I have used the 
camera, a file mgr app, Chrome browser app, a photo app (rename, move, etc 
photos) w/out experiencing this problem at all - screen orientation changes 
as expected. I usually navigate app menues in portrait mode but do text 
entry in horz mode so I change orientation a lot.

It may be hardware but since it has only happen with OsmAnd and then only 
when defining/activating a route it seems strongly possible that it relates 
to how OsmAnd interfaces with the screen orientation API from w/in the 
routing function(s). If it's not a direct hardware fault then presumably 
it's some kind of timing issue.

Just throwing this out so there's a data point if anybody else runs into 
the problem. I will continue to try the routing when I drive and see if and 
how often this occurs.

I just had a thought: What happens when upon arriving (maybe parking before 
one quite arrives and thus not ever hitting the final arrival point) one 
does _not_ dismiss the route but simply continues (shopping, parking, 
driving to next errand, etc) for a couple hours before getting back to 
OsmAnd and attempting to define another route? Does it continue to try to 
recalc and maybe fill up a queue or something?

Rufus

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