Timing issue with servo

[IeiuniumLux]

I have a pyboard v1.1 with the latest firmware v1.19.1 and when run the code below from the REPL prompt, the servo moves properly.

>>> from pyb import Servo
>>> s = Servo(1)
>>> s.angle(80)
>>> s.angle(-80)
>>> s.angle(0)
>>> s.angle(90)

However, if I run the above one after the other in one line, then only the last s.angle(90) statement is executed.

>>> s.angle(80); s.angle(-80); s.angle(0); s.angle(90)

The same occurs if I try to run the first line-by-line code inside a script in the SD card. Only the last s.angle(90) statement is executed.

Is this the expected behavior?

[peterhinch]

You need to leave time after each operation for the servo to complete its movement.