Not sure if you would prefer we use the main support forum but I think this is an over site in the UI.
With regards to accessing the responsive settings most of the settings require you to click the wording. i.e. to access the responsive setting for “Content Break” I need to click the word “Content Break”.
With the text element there is a responsive setting for “Enable Multi-Column Layout” however clicking on the word “Enable Multi-Column Layout” does not activate responsive settings. This is kind of OK I guess as across the interface one usually clicks the word to the left.
The weird thing here is that if you click the empty space to the left of the checkbox then there is actually a responsive setting. The main issue with this is (1) how does one know to click an empty space (I clicked it by mistake) and (2) there is no visual cue that you can click the space.
In this instance it would make more sense that you can click the wording “Enable Multi-Column Layout” as the wording would have the hover effect all the other responsive settings options have. Alternatively if we need to click the space to keep things consistent in terms of placement then the wording “Enable Multi-Column Layout” should still have the hover effect when we hover over the space.