Multislider behavior change in Max 9?

Hello all, maybe I'm doing something wrong, but it appears that the multisider object has changed in Max 9 (or maybe there is some other setting I've inadvertently changed). When I try to change the color of a multisider with a message or attrui, the change doesn't take hold until the multisider is moved, or the patch is unlocked. This holds true for ghostbar settings as well.

I've been working on a patch where I'm using color of multisider to show sequencer position as well as a visual representation of disabled steps and this is now broken. Could this be some setting in max I'm unaware of, or possibly a bug in v9.0.0? It also appears a number of my send and receive objects are no longer working (maybe unrelated though). So far I have only tested on my Apple MBP running Sonoma 14.6.1

I've noticed the same behavior on "Step Arp" from the Max for Live "Sequencers" pack. Both the sequencer position and color change from changing the loop value, only update when changing the value of the multislider.

In Ableton I can switch back to "Use bundled version" under Max Application and everything works as it should, so this seems to be Max 9.0.0 related

Is this a bug? Newly intended behavior? Or some setting I'm unaware of? Any help is much appreciated (including confirmation it's not just on my system)! :)