I've noticed a weird glitch with the text tone volume. I'll explain it as best as I can. I don't know if this was something I noticed with my iPhone 15 or not. I think so, I think this has been an iOS 26 thing.
So, previously, if my sound volume was set to 40 percent in the settings > sounds > sound volume, it'd stay that way. With change with buttons turned off, if I ever adjusted the volume on my phone with the volume buttons, however loud it was, that's how loud my text alerts would be.
Now, no matter how loud I may have the phone, the tones remain very quiet. Same with WhatsApp. I'm not sure if there's a setting somewhere that I don't know about or if this is a bug. It's a little annoying, because I don't want my ringer super loud but I want to be able to adjust my alert volume.
Hopefully I explained it well enough. if it matters, I have audio ducking turned off.
Thanks for any help! Not super urgent, just something i noticed.