Spotify connect volume control broken since ios 17.4 update

I’m using iOS 17.4 on both iPad and iPhone and use the Spotify ‘free’ version. I just quickly tested this and the Spotify app volume slider and the Sonos App volume slider are both working here when playing to a Sonos Move speaker (called Portable in my system). That’s playback from their App using Spotify ‘direct control’. A screenshot is attached, but just to say that this was just a quick initial test.

Please see below….

1. On the left of the screen is the Sonos App and the ‘now playing’ screen showing the volume control/level of a Sonos Move called ‘Portable’
2. On the right of the screen is the Spotify App using a ‘direct control’ link to ‘Portable’ 

I just simply adjust the volume control for ‘Portable’ in the Spotify App and as you can (hopefully) see the volume level of that speaker is adjusting and the Sonos App also reflects the change in volume.

This is on an iPad running iOS 17.4 - I’ve just used this device to demonstrate it is working, but if you’re experience is different, then I would reboot your router and devices, including speaker(s) and mobile …and if the issue persists after that, then perhaps get in touch with Spotify support staff and supply them with the information required, perhaps include a video of your issue too.

Such a delay can often be down to the mobile device communicating with your Sonos speaker. Maybe see what happens when both are using the same WiFi band and wireless network access point.

Also, if relevant, close any other Apps on the mobile and check that any security software like VPN, Firewall, Antivirus, WiFi Calling, Dial Assist, Private network address (MAC address spoofing), or mobile data access by the Sonos App is perhaps not getting in the way of that communication.

Same problem here on iPhone 14 Pro Mac on latest iOS. Volume slider is not working on either Spotify or in the Sonos app.  We tried on different devices and non is working.  
 

So you suggest to reinstall our system? It is always such a hassle and takes long time with all devices.