New Google Sheets custom functions sometimes display “Loading…” indefinitely

Question

SPECIFIC FOR: \"NEW\" google sheets only.

This is a known issue as highlighted by google in the new sheets.

Issues: If you write complex^* custom f

Answer 1

In my case, the cell was stuck with a Loading... message due to "probably" a race condition between functions and formulas resolutions.

This is my custom function:

function ifBlank(value1, value2) {
  return !!value1 ? value1 : value2;
}

This is the formula calling it: =IFBLANK(VLOOKUP($A2,Overrides!$A$2:$E,5,FALSE),VLOOKUP($A2,'_resourceReq'!$A$2:$C,3)) Those VLOOKUP values could be pretty complex and could also take some time to resolve.

Solution: (in my case)

Wrapping the VLOOKUP() into TO_TEXT() or VALUE() for example.

So, changing the formula to =IFBLANK(TO_TEXT(VLOOKUP($A2,Overrides!$A$2:$E,5,FALSE)),TO_TEXT(VLOOKUP($A2,'_resourceReq'!$A$2:$C,3))) worked well.

If that doesn't work maybe try resolving the value from a function into a cell before using it as the argument of your custom function.