It is possible to have the full details in the following link https://www.golfdigest.com/story/biggest-rules-issues-golf-2021:
https://www.golfdigest.com/story/biggest-rules-issues-golf-2021
WGC – DELL MATCH PLAY March 2021
In the Kuchar – Scheffler match, the order of play was a surprise for most of the players and from Nick Faldo, who was working for the network. When a ball is in a penalty area, the order of play remains the furthest from the home from the ball at rest. Kuchar played first at 90 feet from the hole while Scheffler decided to take relief at 160 yards from the hole and played after Kuchar.
GAINSBRIDGE LPGA March 2021
Annika Sorenstam got a wrong ruling from a referee. He denied her a free relief that she was entitled to have because of the LPGA Annual Local Rules giving a free relief from a gate. She took an unplayable and got a one-stroke penalty.
PLAYERS CHAMPIONSHIP – SAWGRASS March 2021
Because Bryson Dechambeau decided to play the 18th hole using the 9th fairway, in the practice rounds, the Committee decided to make the 9th hole Out of Bounds when playing 18.
Viktor Hovland got a penalty of 2 strokes for not placing his ball back in the same spot on a green. The fun fact is that his mother saw the breach and told him later that night.
A Marshall stepped on Bubba Watson’s ball and Watson never found his ball. He had to go back to the tee to play Stroke and Distance.
MASTERS – AUGUSTA April 2021
Abraham Ancer touched the sand in his backswing but did not know it. In the evening, video evidence showed he had touched the sand. He was penalized 2 strokes.
HERITAGE CLASSIC April 2021
Woo Kim waited too long for his ball to fall in the hole. The ball eventually fell in the hole for a birdie, but it was well over 10 seconds. Instead of a birdie, he had to put down a par on his score card.
HUGEL-AIR PREMIA LA OPEN LPGA April 2021
Yani Tseng forgot to sign her score card. She was disqualified. Her score was over 80.
VALSPAR CHAMPIONSHIP April 2021
Jimmy Walker was late on his first hole but under 5 minutes. He got a penalty of 2 strokes.