In the toolbar, there are no subgroups for each tool (the small arrows are missing). Is there any setting that needs to be set to make this happen?
The toolbar has recently been changed, click the 3 dots at the bottom.
Has the function to bring up several tools by holding down on one tool (the small arrow) been removed?
Yes, but you can now edit the toolbar and change the more common tools you want, and the last tools used are shown at the bottom.