Confirmed - cause found, patch not written yet.

No z-order manager: every window's stacking depth is fixed when it is built, so clicking one cannot raise it. There IS a shared drag helper the movable windows already use, so the raise can be hooked in one place rather than 17.

Moving it out of OPEN so the list reflects reality: this one is pinned down to exact files and lines, so what is left is writing and testing the change, not working out what is wrong.

Fixed in fa769276 - same change as #44; this is the general case of it.

Cause: window layers were build-time constants. Equipment was permanently one fixed depth, the bag another, the quest log another, the character card another. Clicking a window did nothing at all to its layer, so two open windows always stacked in the order their classes were written in, and a window you opened second could still appear underneath one that was already up.

v83 keeps an ordered list of open windows instead, and repaints it so the last entry lands on top. A click anywhere inside a window moves it to the end of that list on mouse-down, and opening or re-toggling a window appends it too.

Fix: ported that list. Nineteen windows now derive their layer from their position in it, only open windows occupy a slot, and click-to-front works from anywhere in the window rather than the title bar only.

Retest: open several windows at once, click between them in any order, and confirm each comes fully to the front.