It seems clipboard history switcher is hiding the password like phrases with big dots. Can I disable such behavior?
Haven't tried it, but how about this setting in Preferences:
Thanks. It worked !
I checked preferences about 3 times to see if there’s any setting for not hiding password and surprisingly I missed to look at this setting every time. 
There are also regex settings (described in the preferences section of the documentation) that allow you to specify things that are definitely not passwords, so if you are finding a specific use case that is giving you false positives that might be a more restrained option to turning off the Detect Possible Passwords preference.