_modal.scss in bootstrap-4.5.0

- old
+ new

@@ -81,10 +81,11 @@
 
   // Ensure `modal-dialog-centered` extends the full height of the view (IE10/11)
   &::before {
     display: block; // IE10
     height: subtract(100vh, $modal-dialog-margin * 2);
+    height: min-content; // Reset height to 0 except on IE
     content: "";
   }
 
   // Ensure `.modal-body` shows scrollbar (IE10/11)
   &.modal-dialog-scrollable {
@@ -215,9 +216,10 @@
   .modal-dialog-centered {
     min-height: subtract(100%, $modal-dialog-margin-y-sm-up * 2);
 
     &::before {
       height: subtract(100vh, $modal-dialog-margin-y-sm-up * 2);
+      height: min-content;
     }
   }
 
   .modal-content {
     @include box-shadow($modal-content-box-shadow-sm-up);