Wales legends Scott Quinnell and Tom Shanklin were among those taken aback after the Scarlets were denied a crucial try in their Challenge cup semi-final.
The west Walians fell short in their bid to reach the final, with a decision by referee Mathieu Raynal not to award a penalty try in the second half undoubtedly playing a part in the comeback falling short.
With the Scarlets pushing for the Glasgow line deep into the second half and the scoreline reading 17-28, the home side threw the ball wide in an attempt to outflank the Scots' defence.
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Johnny McNicholl's pass seemed destined for Steff Evans to get over for his second score of the day. However, Glasgow full-back Ollie Smith's outstretched arm deflected the pass intended for the Wales winger, with Smith then diving in an attempt to retrieve his knock-on.
Immediately, Scarlets players and fans were adamant that Smith had deliberately knocked the ball forward, which would have resulted in a penalty try and a card for Smith. But, after checking with the TMO, Raynal decided that Smith had made a genuine attempt to realistically intercept the pass - leaving plenty both at Parc y Scarlets and on social media stunned.
Former Wales No.8 legend Quinnell tweeted: "Penalty try and yellow card @scarlets_rugby"
Shanklin replied: "One of the clearest I’ve seen."
In the stadium, former referee Nigel Owens looked equally taken aback by the decision.
The officials were escorted off the Parc y Scarlets pitch to a smattering of boos, with BT Sport commentator Andrew Cotter referencing the send off they got in commentary.
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