In an answer here Carl Witthoft says the default is that arpeggiated chords are played from lowest to highest. Does this convention apply to both hands? E.g. in Measure 8 of the 2nd movement of this Beethoven sonatina, the arpeggiated chord is on the left hand, in which order should it be played?
Chords, by default, are arpeggiated from the lowest pitch to the highest, unless otherwise indicated, regardless which hand is playing them. This is the case with the Beethoven example in the question.
There is a symbol for downward-arpeggiated chords. It looks like the same "squiggly line", but has an arrow at the bottom, pointing downwards.
(Image source: Steinberg help)
