Selector working sometimes

I created a simple flow in UI Path Studio 2019.12.0-beta6.1, to log to an ERP. I tested it many times and it worked correctyly. After a week or two I went back to my flow and it failed to run. It failed to run, problem concerning the first UI operation (entering a password) appeared. I changed selectors, created activities from a scratch, restarted my computer (Win 10), changed version of UI Studio from preview to stable. Sometimes it works, sometimes not. I can’t find a rule. Please, find attached screen and xaml. I would appreciate any advice, how to diagnose, to fix it, finally to workaround.

if you replace the anchor activity, with a type into or set text activity what happens?

Hi Fernando!
Originally it was “type into”, I changed it to “anchor base” in hope to improve its stability. It didn’t helped. It’s strange that despite the error, the selector is validated in its Editor.
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Have you tried using the Repair button on the Edit selector window?

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Hi jcvsalinas!
Repair button is disabled, probably due to positive validation. As shown on uploaded picture :slight_smile: