I just did a quick test
MSFS 1.15.10.0
787-10
Took off
Manual departure
A/T various speed selects OK
A/P ON
A/T various speed selects OK
Heading selects OK
V/S select / climb out OK
I just did a quick test
MSFS 1.15.10.0
787-10
Took off
Manual departure
A/T various speed selects OK
A/P ON
A/T various speed selects OK
Heading selects OK
V/S select / climb out OK