Perplexed at roll result with CF color

Hello, Whilst working on my char sheet and testing a skill role, I am perplexed at seeing this blue box on an inline roll when I would expect it to be red, no? This is a simple skill roll, 2d20, sorted ascending, crit fail=20, and target success <= 10. In the above exampe there is no success (<10) in this roll. This should be a red box around the inline roll, correct? Here's example with a success (<10) and a CF, still blue?? In fact when a roll a bunch of tests, I'm not seeing any red boxes, only blue whenever there is a 20 in the roll. There's no CS defined so I expect no green boxes, only red. This is the actual button VALUE value:  {{successes=[[?{Dice|2}d20sacf20 < @{Agility}]]}} I presume I am missing something obvious here?

Do you have any CSS targeting the inline roll result? That can change the outline colour.

Doing some more testing I stripped the roll down to just this, removing attributes and template ... [[4d20sacf20<10]] If you paste this in the chat box repeatedly roll this, sooner or later a 20 with no value <10 and the box is still blue. Continued testing and I've determined this blue-behavior appears when using the CF and no CS. If I add a CS value then I get green/red/blue boxes at appropriate time. When no CS is in the roll then I only get blue boxes whenever there is a 20.  Here are two example rolls to prove the behavior; just copy/paste them into the chat box ... [[4d20sacf20<10]] [[4d20sacf20cs<5<10]] The first roll which has a CF and no CS will only produce blue boxes.  The second with the CS will produce normal green/red/blue. Is a blue-only box when using CF and no CS expected behavior?

Wanted to add that to work around this situation I just added a cs0 into the roll and this will produce the red box whenever a 20 is rolled.

I tested with this [[4d20cf20]] to ensure nothing else was interfering, and that made me realise what was going on. By default, roll20 treats the max on a die as a crit, and lowest as a fumble. This still happens unless you overwrite them So with cf20, on a roll of 20, you are  getting a critical and a fumble at the same time. You dont see a fumble on 1, because when you supply a CF value it replaces the default. So you can fix this by supplying a CS value that cant be rolled like [[4d20sacf20cs0]]

You beat me to it - yes cs0 (or cs100, or some other impossible value) is the fix. It's not technically a workaround - its the proper fix.

Cheers ... thanks for the feedback.