diff --git a/frappe/public/js/frappe/ui/dialog.js b/frappe/public/js/frappe/ui/dialog.js
index cfe523e417..723f04509f 100644
--- a/frappe/public/js/frappe/ui/dialog.js
+++ b/frappe/public/js/frappe/ui/dialog.js
@@ -31,9 +31,9 @@ frappe.ui.Dialog = class Dialog extends frappe.ui.FieldGroup {
 
 		this.wrapper = this.$wrapper.find('.modal-dialog')
 			.get(0);
-		if ( this.size == "small" )
+		if (this.size == "small" )
 			$(this.wrapper).addClass("modal-sm");
-		else if ( this.size == "large" )
+		else if (this.size == "large" )
 			$(this.wrapper).addClass("modal-lg");
 
 		this.make_head();
@@ -66,7 +66,7 @@ frappe.ui.Dialog = class Dialog extends frappe.ui.FieldGroup {
 		}
 
 		if (this.minimizable) {
-			this.header.find('.modal-title').click(() => this.toggle_minimize());
+			this.header.find('.title-section').click(() => this.is_minimized && this.toggle_minimize());
 			this.get_minimize_btn().removeClass('hide').on('click', () => this.toggle_minimize());
 		}
 
@@ -186,6 +186,8 @@ frappe.ui.Dialog = class Dialog extends frappe.ui.FieldGroup {
 		}
 		this.$wrapper.modal("show");
 
+		this.$wrapper.removeClass('modal-minimize');
+
 		// clear any message
 		this.clear_message();
 
@@ -216,7 +218,7 @@ frappe.ui.Dialog = class Dialog extends frappe.ui.FieldGroup {
 	}
 
 	toggle_minimize() {
-		this.$wrapper.prev('.modal-backdrop').toggle();
+		$('.modal-backdrop').toggle();
 		let modal = this.$wrapper.closest('.modal').toggleClass('modal-minimize');
 		modal.attr('tabindex') ? modal.removeAttr('tabindex') : modal.attr('tabindex', -1);
 		this.is_minimized = !this.is_minimized;