fix-race-condition-iframe-handler.patch

diff --git a/view/frontend/web/js/view/payment/method-renderer/wallee-method.js b/view/frontend/web/js/view/payment/method-renderer/wallee-method.js
index abc1234..def5678 100644
--- a/view/frontend/web/js/view/payment/method-renderer/wallee-method.js
+++ b/view/frontend/web/js/view/payment/method-renderer/wallee-method.js
@@ -35,6 +35,7 @@
 		},
 		redirectAfterPlaceOrder: false,
 		loadingIframe: false,
 		checkoutHandler: null,
+		creatingIframe: false,
 		
 		/**
@@ -110,6 +111,9 @@
 		},
 		
 		createIframeHandler: function(){
+			if (this.creatingIframe) {
+				return;
+			}
 			if (this.handler) {
 				this.checkoutHandler.selectPaymentMethod();
 			} else if (typeof window.IframeCheckoutHandler != 'undefined' && this.isActive() && this.checkoutHandler.validateAddresses()) {
@@ -117,6 +121,7 @@
 					window.IframeCheckoutHandler.configure('replacePrimaryAction', true);
 				}
 				
+				this.creatingIframe = true;
 				this.loadingIframe = true;
 				fullScreenLoader.startLoader();
 				this.handler = window.IframeCheckoutHandler(this.getConfigurationId());
@@ -140,8 +145,11 @@
 					}
 				}).bind(this), (function(){
+					this.creatingIframe = false;
 					fullScreenLoader.stopLoader();
 					this.loadingIframe = false;
 				}).bind(this));
+			} else {
+				this.creatingIframe = false;
 			}
 		},