The Shift is not working for normal in Photoshop

When I'm using a Wacom tablet in Photoshop, I encounter a strange issue with the brush tool and the Shift key. Normally, holding down Shift should allow me to draw a straight line from the point where I start holding Shift. However, in my case, every time I press Shift, the brush stroke jumps back to the initial point of my first brush stroke and draws a straight line from that position, instead of from where I press Shift.

This behavior occurs regardless of when or where I press Shift while drawing. The brush seems to return to the original axis of the first stroke, and it automatically draws a straight line from there.

I've tried different methods to resolve this issue, but nothing seems to work. Could this be a software bug or some conflict between the Wacom tablet and Photoshop? And is there a way to prevent this behavior?