Maybe try to set this again in Windows. Resetting to their own Software seems to be a common/recurring “problem” with MS (or their hint not to use other software out of their reach.)
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You don’t need to do that. The viewer likely has the option to invoke an editor of your choice. (At least it works for Ubuntu.)
So: select “Edit with External Tool”, an image viewer opens, in that viewer select “Open with…” and choose an application from the list. (In both cases I mean selecting from the mouse right-click menu)