I wonder can I do smth with a size of any text block that Indesign creates if I, for example, copy-paste some text into the page?
I repeat, I don't create any text block, just make the paste command. Then, some text block will be created with my text inside.
Usually this text block is too big especially if I paste just 1-2 words. Right for now, such block equal almost 53 mm squared.
Can I change it? The width is not that important but the height of such block causes some obstacles during the work.
There is a trick to set a custom width for newly pasted text items -- but not their height.
(FYI only, that trick is: the default Object Style for pasted text is [Basic Text Frame]. Set a fixed width and check the box "Fixed Column Width" in its style options.)
so this way it is might be also auto-size:height only used, and even to set some minimum height to avoid a block getting too flattened.
though, autosize options are good for some specific projects, and not really for daily use..
Right, I forgot about the auto-fitting options! But anyway, [Basic Text Frame] is the place to look if you want to experiment. You can safely modify it for a single document.