[6.x] Hide "Live Preview" button while live preview is active (#14866)

Author: duncanmcclean

resources/js/components/entries/PublishForm.vue

@@ -457,7 +457,7 @@ export default {
         },
 
         showLivePreviewButton() {
-            return !this.readOnly && !this.isCreating && this.isBase && this.livePreviewUrl;
+            return !this.isPreviewing && !this.readOnly && !this.isCreating && this.isBase && this.livePreviewUrl;
         },
 
         showVisitUrlButton() {

resources/js/components/terms/PublishForm.vue

@@ -271,7 +271,7 @@ export default {
         },
 
         showLivePreviewButton() {
-            return !this.readOnly && !this.isCreating && this.isBase && this.livePreviewUrl && this.showVisitUrlButton;
+            return !this.isPreviewing && !this.readOnly && !this.isCreating && this.isBase && this.livePreviewUrl && this.showVisitUrlButton;
         },
 
         showVisitUrlButton() {