Behaviour setError() only showing error message every other time

[Jordan Packer]

I have a behaviour created that validates a simple Number custom field to make sure it is between 0 and 100. Here's the code I'm using (as a serverside script for the "Percent" field):

def percent = getFieldByName("Percent")

if(percent.getValue()){
    def value = percent.getValue() as double
    if(value < 0 || value > 100){
        percent.setError("This must be a number between 0-100")
    } else {
        percent.clearError()
    }
} else {
    percent.clearError()
}

The script works.... but only every other time. If I continuously enter random invalid values in that field, I can see the error appear and disappear over and over again. I should mention that when I say "it doesn't work" I mean that the error message doesn't appear. The input box is still outlined in red, and if I try to submit the form I am unable to do so and the error message then appears. So it's a minor bug, but an annoying one. Has anybody else seen this? Do you know how to work around it? Am I doing something wrong in my code? Or is it truly a bug and needs an update to the plugin? @Jamie Echlin [Adaptavist]? Can you confirm?

[Thanos Batagiannis [Adaptavist] · Accepted solution]

Hi Jordan,

This is a known issue and actually it will be fixed in the next release (hopefully very soon). You can start watching the development issue SRJIRA-2136 for updates. 

regards, Thanos

[Jordan Packer]

Thanks for the heads up! Looking forward to the update.

[Sachin Dhamale]

Remove the first  IF-ELSE condition because of this error message appear and disappear again and again

[Jordan Packer]

That first if-else statement is there in order to check for null values.... I don't think that's causing the issue. Sounds like it is indeed a bug (according to Thanos' answer). Thanks for trying, though.