Jeremy Corbyn had only just completed his two-day shadow cabinet reshuffle when he was hit with a wave of resignations from the junior ranks.
Here BuzzFeed News outlines just who has resigned and their reasons for doing so.
1. Jonathan Reynolds
Reynolds quit as shadow rail minister, saying he wanted "more freedom" to speak about the future direction of the Labour party.
In a letter to Corbyn posted on his Facebook page, the MP for Stalybridge and Hyde said Labour needed to get better at "tackling inequality and poverty" and "pursuing more democratic and inclusive political change".
Reynolds said: "I understand your need for a greater degree of discipline on the front bench and therefore believe it would be more appropriate to advocate these causes as a backbencher."
Reynolds also said he could not stand by while McFadden was criticised for condemning those who made excuses for terrorists.
He wrote: "Although I was personally against the proposal to extend air strikes into Syria, I cannot in good conscience endorse the world view of the Stop the War Coalition, who I believe to be fundamentally wrong in their assessment and understanding of the threats the UK faces.
"The security and wellbeing of my constituents must always be my first consideration, and I therefore believe my colleague Pat McFadden was right to condemn those who absolve ISIS (Islamic State) for their actions following the atrocities in Paris."
2. Kevan Jones
Jones resigned as shadow minister for the armed forces after Corbyn appointed anti-Trident MP Emily Thornberry as shadow defence secretary.
Maria Eagle, who was previously in the role, supported the renewal of Britain's nuclear deterrent – unlike the Labour leader. She has now been demoted to shadow culture secretary.
In a letter to Corbyn, Jones said: "I have been clear and consistent that I believe it is the right policy for the country to maintain a minimum credible nuclear deterrent, while working to advance global nuclear disarmament
"I am determined to continue making the case for Labour to have strong, credible defence and security policies, and I feel that the most effective way for me to continue to do this is from the back benches."
Jones, MP for Durham North, made clear he has "always got on" with Corbyn personally. He said: "I would particularly like to thank you for your campaign work around mental health."
In November Corbyn forced his long-time ally Ken Livingstone, who is co-chairing a review of Labour's defence policy, to apologise to Jones for calling him "disturbed" and in need of "psychiatric help".
3. Stephen Doughty
Stephen Doughty resigned as shadow foreign affairs minister live on television in protest at McFadden's treatment. He told BBC Two's Daily Politics show that his colleague had been "singled out for punishment for speaking with honesty and principle".
Doughty's dramatic resignation came after he sent this tweet late on Tuesday night.
In a statement, Doughty, MP for Cardiff South and Penarth, said: "I agree entirely with the words Pat McFadden used in denouncing terrorism and the false narrative that the West is to blame, and so I believe the only honourable thing for me to do, when a fellow team member has been singled out for punishment for speaking with honesty and principle on this critical issue, is to leave the front bench."
Emily Ashton is a senior political correspondent for BuzzFeed News and is based in London.
Contact Emily Ashton at email@example.com.
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