Incorrect position of text after upgrading to 3.2.3

I recently upgraded from psychopy version 3.1.0 to the latest version 3.2.3 (I am using Anaconda). When I run previously built experiments in this new version, the position of visual.TextStim objects has shifted horiztonally. For example the following code previously resulted in text placed at the center of the screen, where as in the latest version it results in text which is shifted so that the right edge lines up with the corner of the screen.

from psychopy import core,  visual 
win = visual.Window(fullscr=True, monitor="testMonitor", units="norm", color = "white" )
text = "lots of text here please lots of text here please lots of text here please"
t = visual.TextStim(win, text=text, color = "black", pos = [0,0], height = .05)
t.draw()
win.flip()

Have I somehow changed some settings, or what could lead to this behaviour? Thanks!