Repro:

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1. Launch CRM

2. Navigate to Settings

3. Click Customization

4. Click Customize the System

5. Expand Accounts(or any entity)

6. Click on Forms

7. Click to open Accounts Main Form

8. Click on New Field button from right side bottom

9. Add a test field  with name Test 1

10. Select Data type as Multiple-line text--> Save and Close

11. Click on New Field button once again

12. Add a test field with Name Test 2

13. Select Data type as Multiple-line text--> Save and Close

14. Back to the form page from Field Explorer select Custom Fields from the filter

15. Drag and Drop the fields Test 1 and Test 2 one by one

16. Double click and Open Test 1

17. Click on Formatting tab

18. Under Row Layout area Check Automatically Expand to use available space

19. Double click and Open Test 2

20. Click on Formatting tab

21. Under Row Layout area Check Automatically Expand to use available space

22. Click OK

Results

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It gives a warning message that Another auto-expanding field is already on this tab. To set this field as auto-expanding, click OK. To leave the original field as an auto-expanding field, press Cancel

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Ask/Suggestion:

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Instead of limiting the Auto-expanding to 1 field, users should be given an option to select auto-expanding to any number of fields they require.

Many users use the auto-expanding fields so that they view the entire text at one go and that enhances productivity of a user instead of scrolling through the entire notes