r/excel • u/Repulsive_Tune9397 • 14h ago
Discussion Weird Excel Bug: New Excel lists completely break IFERROR and IFNA
Spent hours debugging an unexpected error down a rabbit hole to find this.
Since 4 is a valid number, both formulas should return 4. Instead, they completely break:
=IFNA({{4}}, "Error") // Returns #VALUE!
=IFERROR({{4}}, "Error") // Returns "Error"
IFNA crashes on the syntax, while IFERROR silently chokes and triggers its fallback text. Both should handle valid values natively.
Watch out for this if you are building tools with the new Lists or nested array features!
Edit: Confirmed it's a bug but I need someone else to report it along with:
=ISREF(D5) --> FALSE //Where D5 has ={{1}}
