1.       Give us the steps to reproduce the bug
Import the deck listed below.
Set the format to Historic Brawl.
Set any colorless commander.
Attempt to save, receive network error

2.       Note which platform you’re using (PC, Mac, Android, or iOS)
Mac

3.       Enter the actual results you’re experiencing
Deck refuses to save

4.       Enter the expected results of the feature
Deck saves and is playable

Deck
1 Forsaken Monument (ZNR) 244
1 Crawling Barrens (ZNR) 262
1 Bonders' Enclave (IKO) 245
1 Karn's Bastion (WAR) 248
1 Zhalfirin Void (DAR) 249
1 Radiant Fountain (M21) 248
1 Sunscorched Desert (AKR) 331
1 Gingerbrute (ELD) 219
1 Thought-Knot Seer (OGW) 9
1 Mind Stone (WTH) 153
1 Voltaic Servant (DAR) 236
1 Crystalline Giant (IKO) 234
1 Myriad Construct (ZNR) 246
1 Akroma's Memorial (M13) 200
1 Thran Temporal Gateway (DAR) 233
1 Meteor Golem (M20) 232
1 Ulamog, the Ceaseless Hunger (BFZ) 15
1 Access Tunnel (STX) 262
1 Animal Sanctuary (M21) 242
1 Blast Zone (WAR) 244
1 Buried Ruin (JMP) 491
1 Cryptic Caves (M20) 244
1 Detection Tower (M19) 249
1 Emergence Zone (WAR) 245
1 Faceless Haven (KHM) 255
1 Field of Ruin (THB) 242
1 Ghost Quarter (ISD) 240
1 Inventors' Fair (KLR) 284
1 Labyrinth of Skophos (THB) 243
1 Mobilized District (WAR) 249
11 Wastes (OGW) 184
1 Reliquary Tower (M19) 254
1 Scavenger Grounds (AKR) 328
1 Tyrite Sanctum (KHM) 272
1 Unknown Shores (THB) 249
1 Unclaimed Territory (XLN) 258
1 Darksteel Citadel (M15) 242
1 Ornithopter (BRR) 37
1 Mishra's Bauble (BRR) 34
1 Skittering Surveyor (JMP) 486
1 Ivory Tower (BRR) 23
1 Lightning-Core Excavator (JMP) 32
1 Manifold Key (M20) 230
1 Sparring Construct (DAR) 232
1 Burnished Hart (BRR) 8
1 Defense Grid (BRR) 13
1 Campus Guide (STX) 252
1 Mazemind Tome (M21) 232
1 Myr Sire (JMP) 475
1 Renegade Map (KLR) 265
1 Steel Overseer (M20) 239
1 Weathered Runestone (KHM) 247
1 Bloodline Pretender (KHM) 235
1 Environmental Sciences (STX) 1
1 Clockwork Servant (ELD) 216
1 Chief of the Foundry (KLR) 226
1 Expanded Anatomy (STX) 2
1 Foundry Inspector (KLR) 241
1 Introduction to Prophecy (STX) 4
1 Iron Bully (WAR) 240
1 Palladium Myr (M21) 234
1 Scorn Effigy (KHM) 246
1 Sculpting Steel (KLR) 302
1 Shambling Suit (ELD) 230
1 Pristine Talisman (BRR) 43
1 Cityscape Leveler (BRO) 233
1 Universal Automaton (MH1) 235
1 Adaptive Automaton (BRR) 1
1 Patchwork Automaton (NEO) 254
1 Ichor Wellspring (BRR) 21
1 Monoskelion (MH2) 229
1 Faceless Agent (J21) 1
1 Filigree Familiar (KLR) 239
1 Nettlecyst (MH2) 231
1 Scrap Trawler (KLR) 267
1 Skyscanner (M21) 238
1 Anvilwrought Raptor (M20) 221
1 Hedron Archive (JMP) 468
1 Iron Golem (AFR) 247
1 Jhoira's Familiar (DAR) 220
1 Juggernaut (JMP) 471
1 Mystic Forge (M20) 233
1 Solemn Simulacrum (M21) 239
1 Introduction to Annihilation (STX) 3
1 Paradox Engine (KLR) 259
1 Matter Reshaper (OGW) 6
1 God-Pharaoh's Statue (WAR) 238
1 Ugin, the Ineffable (WAR) 2
1 Platinum Angel (M10) 218