Reinitialize mCurrentGutenbergPropsBuilder if null

Author: aditi-bhatia

libs/editor/src/main/java/org/wordpress/android/editor/gutenberg/GutenbergEditorFragment.java

@@ -680,6 +680,13 @@ public void onActivityResult(int requestCode, int resultCode, @Nullable Intent d
                 String blockId = data.getStringExtra(WPGutenbergWebViewActivity.ARG_BLOCK_ID);
                 String content = data.getStringExtra(WPGutenbergWebViewActivity.ARG_BLOCK_CONTENT);
                 getGutenbergContainerFragment().replaceUnsupportedBlock(content, blockId);
+                if (mCurrentGutenbergPropsBuilder == null) {
+                    SavedInstanceDatabase db = SavedInstanceDatabase.Companion.getDatabase(getContext());
+                    if (db != null) {
+                        mCurrentGutenbergPropsBuilder = db.getParcel(ARG_GUTENBERG_PROPS_BUILDER,
+                                GutenbergPropsBuilder.CREATOR);
+                    }
+                }
                 // We need to send latest capabilities as JS side clears them
                 getGutenbergContainerFragment().updateCapabilities(mCurrentGutenbergPropsBuilder);
                 trackWebViewClosed("save");