When I click at address in disassembler view, I see an auto highlight on address but couldn't copy it with cmd+C and should press cmd+shift+c or highlight with mouse click and after it press cmd+C

If I understood you correctly, it seems like you are confusing token-highlighting and text selection.
A single click on a token, such as an operator, address or variable, will highlight the selected token as well as any other occurrence of the same token in the disassembly. This DOES NOT selects the text. Thus, CTRL+C would not copy this token for you.
If you want to copy a text in the disassembly, select it and press CTRL+C. If you want to copy the address, select it and press CTRL+C. We believe it is useful so we also provided a shortcut to automatically copy the address on which your cursor is currently on, using CTRL+SHIFT+C.
You can use CTRL+SHIFT+C to copy the address, even if the address part of the disassembly is not the part that is currently highlighted as a token.
In addition to that. One may clame that it would be nice that Ctrl+C will copy the current line, even if no text is selected. This is a behavior common in code editors. You can simply use the shortcut to copy the whole line you're in, without selecting any text.
I agree with this and I think it can be a feature-request - but the current situation is clearly not a bug.
I agree with @ITAYC0HEN that this isn't a bug.
In case of copying with empty selection in Cutter it might copy the highlighted token instead of line. In code editors copying a line is useful for moving code around. I can't imagine a common use-case for copying single disassembly line. Copying the selected token would be useful not only for address but also various constants from instruction arguments. In code editors word can often be selected using doubleclick but cutter it will trigger change of seek position.
@karliss yeap, because the token-highlighting without copy functional have confused not only me :) Copy line is worse than this but an empty copy after cmd+c in this case is the worst.
Most helpful comment
I agree with @ITAYC0HEN that this isn't a bug.
In case of copying with empty selection in Cutter it might copy the highlighted token instead of line. In code editors copying a line is useful for moving code around. I can't imagine a common use-case for copying single disassembly line. Copying the selected token would be useful not only for address but also various constants from instruction arguments. In code editors word can often be selected using doubleclick but cutter it will trigger change of seek position.