Spark Double that entered by seeking off Fragment Reality shows incorrect stats
My opponent targeted my Horned Loch-Whale with Fragment Reality. I responded by flashing in a second Horned Loch-Whale. Fragment Reality resolved and replaced my first Horned Loch-Whale with a Spark Double, which I had copy the second Horned Loch-Whale. The Spark Double rendered as a 0/0 with a +1/+1 counter on it and no abilities (incorrect; it copies the Horned Loch-Whale) until my opponent targeted it with Lightning Helix, at which point the UI corrected itself and put a Ward 2 trigger on the stack.
I can't attach the Arena log file because it's over 100 MB and ZIP files are not allowed, but I'd be happy to forward it upon request to my email or Twitter or Discord.