Hi Alex. Not in my case. I have commercial workflow system where all the forms based on  Orbeon (we work on windows system). And on my form where whole section in read only I cannot put cursor iside the text area cause instead of standard cursor i have this sign https://filestore.community.support.microsoft.com/api/images/d2c3f4bf-55ca-4c12-8323-52fb825b4fb9/ So when i click twice i can tick one word, but after i use ctrl+a i tick whole page (like in the picture below). I cannon explain You why it happens but this is how it works. I checked on three different browsers (IE, Chrome, Firefox) and ctrl +A do now work. On Chrome and Firefox when I click three times i can tick whole text but unfortunately we have to use IE for work where it don't work.