First, good news I got that backwards. It's when word wrapping is attached to vector shape that it won't move. You have to move the shape to move the text. Raster selection frames you can move all you want.
Second, It doesn't matter what layer you selected first, PSP attempts to be "helpful"...like Excel with dates. When you hover the text tool over either another vector shape (on any layer) or over a raster selection it attempts to use that shape as a bounding box for word-wrapping.
Here is a demo video of that:
https://drive.google.com/file/d/1rT1u1J ... sp=sharing
You'll notice there are three main cursors with the text tool: 1) Crosshairs with a T in the corner. (normal) 2) Corsshairs with a [T] in brackets in the corner (word-wrapping) and 3) Cross hairs with a T rotated along a curve (attach text to curve)
Word-wrapping can use both raster selections and vector shapes. In the video you saw when I hovered over a shape the cursor changed to #2 - and if I click while the cursor looks like this it'll map the cursor to the bounding box of that shape. As I type it'll auto-wrap the text to stay within the bounding box. The same is true with a raster selection. Now, with a raster selection I can move the text anywhere I want after editing it and applying the changes. But once I go back in to edit the text it'll jump right back to where the selection was.
If I do Text Wrapping inside of a shape, I cannot move the text. It is bound to the shape. I have to move the vector shape to move the text.
If I hover over just the edge of the vector shape it'll change the cursor to #3. And the text will follow the curve of the path that makes up the vector shape.
If I'm not on a raster or a vector the cursor will look like #1. Just a regular Text item and it'll let me place the text anywhere I want.
So, how do you avoid modes 2 and 3? You have three options: 1) Hide the shape that you've hovering over before adding text to the area. It'll just add a plain text object and nothing more. You can then reveal the vector shape again without worrying about them getting connected.
2) You can click in a blank area of the canvas and move the text after you're done creating it.
3) You can try an old trick that might still work, hold the ALT key before clicking with your mouse to create the text item. It should keep the cursor as a standard T (#1) and not map to the curve or text wrapping.
