Incorrect machine name saved while adding field in content type, when quickly typing the label and pressing enter.

Add a field to any content type -
1. Select a type e.g. text formatted.
2. Type a sentence with 3-4 words. Wait for the machine name to update.
2. Now replace the sentence with "a sentence with 4-5 words" in the field label quickly (by typing), without stopping & press enter

Press continue on all subsequent steps. You will notice that the machine name of the field will be incorrect.