CyberArk Dashboard SAML authentication problem

Dear all
We need advice on CyberArk Dashboard and SAML authentication.
We have created PAW stations within our corporate PAM environment, where we use RDM. In the School and Work accounts section of PAW, we have added our accounts from the MS Edge browser to the Windows system. One of these accounts is used to log into CyberArk via SAML, and the other is for managing our MS tenant.
And when we launch CyberArk Dashboard on this PAW station, where we have set up authentication using SAML via our MS Tenant (as required), a window for selecting these accounts appears. Under normal circumstances, I can select the appropriate account and log in without any problems.
Occasionally, CyberArk Dashboard opens this window for selecting accounts but does not offer a list of accounts. Instead, it tries to use one of these accounts in the background to log in to CyberArk. It selects the wrong one and displays an authentication error, see image.
The strange thing is that when RDM and CyberArk Dashboard get into this state, the account selection window works fine in other applications.
So far, we have been able to resolve this issue either by deleting the RDM profile or, in some cases, by deleting the WebView2.Cache folder in the RDM profile.
Now, on one station, we are unable to get CyberArk Dashboard to offer a selection of accounts for authentication. Deleting the RDM profile does not help.

Unfortunately, we are unable to simulate this situation again.
In the RDM settings, I found the following options that could possibly solve our problem, or rather, consult their functionality.
First. In the Application -> Application Close section, there is a Clear cache on close (Microsoft Edge) function. See the image. Which cache does RDM clear, and does it do so when RDM is closed?
Second. In the Entry types -> Sessions -> Website section, there is an option called Enable Single Sign-on with Windows accounts. See the image. By default, it is set to Yes. Changing it to No displays a login window without selecting an account. How does this option work? I assume it affects all website objects, is that correct?

We need advice on where the error might be. It seems that RDM is reading the list of accounts from Windows incorrectly. Does RDM log its process of retrieving accounts from Windows somewhere?