I’m having problems with this on iOS and the web (iMac) when previewing. I thought it might be related to the Drag & Drop beta test that I’m using but not sure. Center align only works for one of four labels.
Thanks for the Tip!. Your work around does allow for centering using web platforms. Unfortunately it does not provide for a programatic (block-based change) access to change this property. And it is odd that the “SIMPLE” properties do not work consistently across platforms, but the ADVANCED properties do.