Cannot get Latest Data with query After Push If I use limit firebase.QueryLimitType.FIRST

[sanghyun5958]

Thank you for reading my question. I'm using Realtime Database with Angular Nativescript.

I couldn't get refreshed data if I write it below on my query after pushing the data. limit: { type: firebase.QueryLimitType.FIRST, value: 18 }

Please give me some tips.. thank you

 push(carModel: Actor): Promise<any> {
        carModel.createTs = new Date().getTime() * -1;
        const updateModel = ActorService.cloneUpdateModel(carModel);
        return firebase.push("/actors", updateModel);
    }

ngOnInit(): void {
        this._changeDetectionRef.detectChanges();

        if (!this._dataSubscription) {
            setTimeout(() => {
                this._isLoading = true;
                this._dataSubscription = this._carService.loadQuery().subscribe((actors: Array<Actor>) => {
                    if (actors.length) {

                        this._actors = new ObservableArray(actors);
                        this.lastTs = this._actors["_array"][this._actors.length - 1].createTs;

                        this._isLoading = false;
                    }
                });
            }, 500);
        }
    }

loadQuery( ): Observable<any> {
        return new Observable((observer: any) => {
            const path = "actors";

            const onQueryEvent = (snapshot: any) => {
                this._ngZone.run(() => {
                    const results = this.handleSnapshot(snapshot.value);
                    observer.next(results);
                });
            };

            firebase.query(onQueryEvent, `/${path}`, {
                singleEvent: true,
                orderBy: {
                    type: firebase.QueryOrderByType.CHILD,
                    value: "createTs" // actordatory when type is 'child'
                },
                limit: {
                    type: firebase.QueryLimitType.FIRST,
                    value: 18
                }
            });
        }).pipe(catchError(this.handleErrors));
    }

[EddyVerbruggen]

Do you know if this is caused by the plugin, or is it "regular" Firebase behavior? If you suspect the latter then please ask this on SO as well and tag your Q with "firebase".