Bug. Fixes #7743 - Explicit given '0' for MIN or MAX had been interpreted as 'not set'. Fixed.

extension/Source/core/helper/Support.php

@@ -965,8 +965,16 @@ class Support {
             $formElement[FE_CHECK_TYPE] = $checkType;
         }
 
-        if (empty($formElement[FE_MIN])) $formElement[FE_MIN] = $min;
-        if (empty($formElement[FE_MAX])) $formElement[FE_MAX] = $max;
+        // If nothing given, set default
+        if ( ($formElement[FE_MIN]??'')==''  ){
+            $formElement[FE_MIN] = $min;
+        }
+
+        // If nothing given, set default
+        if ( ($formElement[FE_MAX]??'')==''){
+            $formElement[FE_MAX] = $max;
+        }
+
         if (empty($formElement[FE_INPUT_TYPE])) $formElement[FE_INPUT_TYPE] = $inputType;
 
         // If a  $formElement[FE_STEP] is given, the optional boundaries (FE_MIN / FE_MAX) have to be aligned to a multiple of $formElement[FE_STEP].