When going to edit these specific decks: "Izzet Phoenix," "Cloned Izzet Phoenix," and "Imported Izzet Phoenix," the screen gets stuck on "Waiting for Server."

Cloned Izzet Phoenix and Imported Izzet Phoenix are cloned and imported copies, respectively, of the original Izzet Phoenix deck. There is still audio and pressing "ESC" (escape) does cause a sound to play as if it were bringing up a menu, but there is no UI to interact with and thus nothing you can do other than force quit by ALT+F4 or task manager. None of the other decks in my collection cause this issue that I am aware of. Perhaps it could be a specific card or card style causing this issue. Below is the decklist:

Deck
2 Mountain (ANA) 7
2 Sulfur Falls (DAR) 247
4 Steam Vents (GRN) 257
4 Consider (MID) 44
2 Island (MKM) 280
4 Spirebluff Canal (KLR) 286
4 Riverglide Pathway (ZNR) 264
3 A-Unholy Heat (MH2) 145
4 Faithless Looting (SIS) 40
4 A-Dragon's Rage Channeler (MH2) 121
4 Arclight Phoenix (GRN) 91
4 Ledger Shredder (SNC) 46
4 Opt (M21) 59
4 Expressive Iteration (STX) 186
2 Thundering Falls (MKM) 269
2 Lightning Axe (SIR) 166
1 Spikefield Hazard (ZNR) 166
4 Treasure Cruise (KTK) 59
2 Spell Pierce (NEO) 80

Sideboard
1 Narset, Parter of Veils (WAR) 61
2 Soul-Guide Lantern (BRR) 54
1 Abrade (VOW) 139
1 Mystical Dispute (ELD) 58
1 Negate (M20) 69
1 Disdainful Stroke (GRN) 37
1 Mystical Dispute (ELD) 58
1 Abrade (LCI) 131
1 Lava Coil (GRN) 108
1 Negate (DMU) 58
1 Brazen Borrower (ELD) 39
3 Flame Sweep (M20) 139