Pressure Sensitivity is on, when the brush preference has it turned off V26.1

[Reality Reimagined]

Essentially pressure sensitivity is dictating the brush tip size and opacity, even though in the brush settings it's turned off.  I've the basic brush, soft round settings and the mixer brush as well.  I've tested it with a simple white canvas and I've painted - same results as if pressure sensitivity is turned on. 

Is there some new hidden way to turn this off?

Side note - it would be lovely if Adobe stopped changing basics, hot-keys, etc (from established norms) for NO APPARENT reason.  It's exhausting that they spend development time doing this and not fixing the multitiude of bugs in every-single-update.

[Trevor.Dennis]

If this button is turned on in the Options Bar, then Pressure Size will be enabled as soon as you contact stylus to tablet, and Shape Dynamics will be ticked.  The Brush Preview will also show as tapered.  Is that what is happening?

I assume you are just using the Brush tool and not stroking a path, for instance?

I can't think how pressure size would be enabled without the above happening.  I hate to use a cop out, but you could just Reset the brush tool

Side note - it would be lovely if Adobe stopped changing basics, hot-keys, etc

By @Reality Reimagined

Could you give specifics?  We can give you workarounds if it is not working for you.  For instance saving custom shortcuts, toolbars and menus with custom workspaces.  This is a super useful feature that lets you choose how shortcuts work according to context.  If you need the defualt, then switch to Essentials.  I do this with short actions triggered by function keys (i.e. F5 gives me my most used workspace, F6 gives me Essentials)

I feel sure we can improve your Photoshop experience if you'd like to do that.

[Reality Reimagined]

First thank you for the kind and detailed response (with screen caps).

I'm attaching a sample to show the disparagements between the two versions.  First - I do know of the quick/hotkey buttons at the brush tool controls, to activate pressure sensitivity for both opacity and flow.  Neither of those are turned on for this example.

Second - the below image is using the basic mouse and clearly there is a big variance - not only in pressure, but in brush size.  The sample document is a 10x10 inch, 16-bit.

Thank you for any insight!

[Reality Reimagined]

Forgot to add that I did reset the brushes in V26.1 and still no change.

[Trevor.Dennis]

Second - the below image is using the basic mouse 

By @Reality Reimagined

So you are not using a tablet with pressure sensitive pen/stylus then?

Are you, perhaps talking about how the cursor is displayed with different brush sizes?

Are you viewing both brushes with zoom set to 100%  That's the only way you could get a true representation.

[Reality Reimagined]

I am using a pen tablet - Wacom Intuos 4.  I mentioned the basic mouse as a way to demonstrate that even with a device that doesn't have pressure sensitivity, the program is still registering the input as pressure sensitive.  

For the brush size issue - what I did was make a simple circle with a stroke.  Then increased the brush size of the basic brush to fit the circle.  To be able to fit the circle in one version I hit a size of 700 - the other program I had to increase to 1400 to get it close.

[Trevor.Dennis]

But have you tried comparing radically different sized, fully soft, brushes on the same canvas at the same time, so you are viewing them at the same document zoom ratio?  The screen shots below are with zoom set to 100%. The larger brush cursor is a bit over twice the size of the smaller one.  I would say they compare pretty well.

What cursor are you using?  I use Full Size with Cross hair which looks a little different to yours.  Did you definitely click just the once in each case?  The other thing that would affect this is if you had Build-up checked in Brush Settings.  That puts you into air-brush mode, and the longer your hold down the mouse button, the more color is applied, and the bigger the fill inside the cursor ring.

[Reality Reimagined]

I'm not seeing the revelance on the brush size suggestion, in regard to the document zoom?  The brush in V25.12 has to be 1400 px in size to be able to fit the size of a 700 px brush in v26.1

And buildup is not activated.  I've reset all of the tools and the brush (with one single click of a mouse or tap of a Wacom pen) is displaying pressure sensitivity.  

I'm going to uninstall v26.1 and reinstall which seems to be par-for-the-course with Adobe when random bugs occur with every "fresh" install