Rectangular Marquee tool no longer allows aspect ratio?
Am I doing something wrong or did they change this tool? I used to be able to select an aspect ratio or fixed w/h for a selection, but not anymore.

Am I doing something wrong or did they change this tool? I used to be able to select an aspect ratio or fixed w/h for a selection, but not anymore.

Could you please post complete screenshots with the pertinent Panels (Toolbar, Layers, Options Bar, …) visible?
What have you done for all-purpose trouble-shooting so far?
Restoring Preferences after making sure all customized presets like Actions, Patterns, Brushes etc. have been saved might be a good starting point:
https://helpx.adobe.com/photoshop/using/preferences.html
https://helpx.adobe.com/photoshop/kb/basic-trouble-shooting-steps.html
https://helpx.adobe.com/photoshop/kb/troubleshoot-gpu-graphics-card.html
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