It would be even better if we could rotate comments.

That works with some objects yes, but not with the text box I'm referring to.
As mentioned earlier, if I create a text box with "Comment => Add text box" the gripper for rotating is not there.

https://goo.gl/99VsCY

Hi,

As I mentioned before, we do have the functionality of rotating the text box, please see the snapshot to see how the rotate icon looks like. https://drive.google.com/file/d/1FC2R4q5eYIjn4Po2uAE6vSsAohWi_G0q/view?usp=sharing

Exact steps:
1. Go to Edit App
2. Select the text box you wish to rotate
3. When you hover over grippers of text box (we have 8 at boundary of text box)
4. You will get a rotate sign

Use this to rotate a text box.

Thanks,
Adobe Acrobat DC Team

I agree with Sami. I do not find any rotation symbol on any of the 8 handles on the boundary when we select text box, may be received one or newly created by us. Also in Edit mode when we select text box, the text box looses the selection if the cursor goes outside the boundary of text box. We have to select it again.
Adobe Acrobat DC(18.009.20050)

The solution suggested by Charu Maheshwari does not work with text boxes made with "Add text box" -tool (Comment => Add text box).

This was the original problem, so please remove the resolved status.

does it work as formfield textbox ?

Hi,

We have functionality of rotating a text box in Adobe Acrobat DC.

1. Go to Edit App
2. Select the text box you wish to rotate
3. When you hover over grippers of text box (we have 8 at boundary of text box)
4. You will get a rotate sign

Use this to rotate a text box. Do let me know if you need more help here.

Thanks,
Adobe Acrobat DC Team

That would be so great if you could rotate formfields freely