diff --git a/src/composables/useRouteFilter.ts b/src/composables/useRouteFilter.ts
index a9daf1c5f..abcd1f03a 100644
--- a/src/composables/useRouteFilter.ts
+++ b/src/composables/useRouteFilter.ts
@@ -1,4 +1,4 @@
-import {reactive, watch, type Ref} from 'vue'
+import {computed, ref, watch, type Ref} from 'vue'
 import {useRouter, type RouteLocationNormalized, type RouteLocationRaw} from 'vue-router'
 import cloneDeep from 'lodash.clonedeep'
 
@@ -11,26 +11,26 @@ export function useRouteFilter<F extends Filter = Filter>(
 	) {
 	const router = useRouter()
 
-	const filters: F = reactive(routeToFilter(route.value))
+	const filters = ref<F>(routeToFilter(route.value))
+
+	const routeFromFiltersFullPath = computed(() => router.resolve(filterToRoute(filters.value)).fullPath)
 
   watch(() => cloneDeep(route.value), (route, oldRoute) => {
-    if (route.name !== oldRoute.name) {
-      return
-    }
-    const filterFullPath = router.resolve(filterToRoute(filters)).fullPath
-    if (filterFullPath === route.fullPath) {
+    if (
+			route.name !== oldRoute.name ||
+			routeFromFiltersFullPath.value === route.fullPath
+		) {
       return
     }
   
-    Object.assign(filters, routeToFilter(route))
+    filters.value = routeToFilter(route)
   })
 
   watch(
     filters,
     async () => {
-      const newRouteFullPath = router.resolve(filterToRoute(filters)).fullPath
-      if (newRouteFullPath !== route.value.fullPath) {
-        await router.push(newRouteFullPath)
+      if (routeFromFiltersFullPath.value !== route.value.fullPath) {
+        await router.push(routeFromFiltersFullPath.value)
       }
     },
     // only apply new route after all filters have changed in component cycle
diff --git a/src/views/list/ListGantt.vue b/src/views/list/ListGantt.vue
index 7eb5ae737..253a7ffdb 100644
--- a/src/views/list/ListGantt.vue
+++ b/src/views/list/ListGantt.vue
@@ -87,7 +87,7 @@ const defaultTaskEndDate: DateISO = new Date(today.getFullYear(), today.getMonth
 async function addGanttTask(title: ITask['title']) {
 	return await addTask({
 		title,
-		listId: filters.listId,
+		listId: filters.value.listId,
 		startDate: defaultTaskStartDate,
 		endDate: defaultTaskEndDate,
 	})
@@ -96,8 +96,8 @@ async function addGanttTask(title: ITask['title']) {
 const flatPickerEl = ref<typeof Foo | null>(null)
 const flatPickerDateRange = computed<Date[]>({
 	get: () => ([
-		new Date(filters.dateFrom),
-		new Date(filters.dateTo),
+		new Date(filters.value.dateFrom),
+		new Date(filters.value.dateTo),
 	]),
 	set(newVal) {
 		const [dateFrom, dateTo] = newVal.map((date) => date?.toISOString())
@@ -105,11 +105,11 @@ const flatPickerDateRange = computed<Date[]>({
 		// only set after whole range has been selected
 		if (!dateTo) return
 
-		Object.assign(filters, {dateFrom, dateTo})
+		Object.assign(filters.value, {dateFrom, dateTo})
 	},
 })
 
-const initialDateRange = [filters.dateFrom, filters.dateTo]
+const initialDateRange = [filters.value.dateFrom, filters.value.dateTo]
 
 const {t} = useI18n({useScope: 'global'})
 const authStore = useAuthStore()
diff --git a/src/views/list/helpers/useGanttFilter.ts b/src/views/list/helpers/useGanttFilter.ts
index 9268c903c..87286ff03 100644
--- a/src/views/list/helpers/useGanttFilter.ts
+++ b/src/views/list/helpers/useGanttFilter.ts
@@ -36,7 +36,8 @@ function getDefaultDateTo() {
 	return new Date(now.getFullYear(), now.getMonth(), now.getDate() + DEFAULT_DATETO_DAY_OFFSET).toISOString()
 }
 
-function routeToFilter(route: RouteLocationNormalized): GanttFilter {
+// FIXME: use zod for this
+function ganttRouteToFilter(route: RouteLocationNormalized): GanttFilter {
 	return {
 		listId: Number(route.params.listId as string),
 		dateFrom: parseDateProp(route.query.dateFrom as DateKebab) || getDefaultDateFrom(),
@@ -45,7 +46,8 @@ function routeToFilter(route: RouteLocationNormalized): GanttFilter {
 	}
 }
 
-function filterToRoute(filters: GanttFilter): RouteLocationRaw {
+// FIXME: use zod for this
+function ganttFilterToRoute(filters: GanttFilter): RouteLocationRaw {
 	let query: Record<string, string> = {}
 	if (
 		filters.dateFrom !== getDefaultDateFrom() ||
@@ -80,8 +82,8 @@ function ganttFiltersToApiParams(filters: GanttFilter): GetAllTasksParams {
 	}
 }
 
-export function useGanttFilter(route: Ref<RouteLocationNormalized>) {
-	const {filters} = useRouteFilter<GanttFilter>(route, routeToFilter, filterToRoute)
+export function useGanttFilter(route: Ref<RouteLocationNormalized>): ReturnType<typeof useRouteFilter> & ReturnType<typeof useGanttTaskList> {
+	const {filters} = useRouteFilter<GanttFilter>(route, ganttRouteToFilter, ganttFilterToRoute)
 
 	const {
 		tasks,
diff --git a/src/views/list/helpers/useGanttTaskList.ts b/src/views/list/helpers/useGanttTaskList.ts
index 2ba854273..55faf29d0 100644
--- a/src/views/list/helpers/useGanttTaskList.ts
+++ b/src/views/list/helpers/useGanttTaskList.ts
@@ -1,10 +1,10 @@
-import {computed, ref, shallowReactive, watchEffect} from 'vue'
+import {computed, ref, shallowReactive, watch, type Ref} from 'vue'
 import cloneDeep from 'lodash.clonedeep'
 
 import type {Filter} from '@/composables/useRouteFilter'
 import type {ITask, ITaskPartialWithId} from '@/modelTypes/ITask'
 
-import TaskCollectionService, { type GetAllTasksParams } from '@/services/taskCollection'
+import TaskCollectionService, {type GetAllTasksParams} from '@/services/taskCollection'
 import TaskService from '@/services/task'
 
 import TaskModel from '@/models/task'
@@ -12,7 +12,7 @@ import {error, success} from '@/message'
 
 // FIXME: unify with general `useTaskList`
 export function useGanttTaskList<F extends Filter>(
-	filters: F,
+	filters: Ref<F>,
 	filterToApiParams: (filters: F) => GetAllTasksParams,
 	options: {
 		loadAll?: boolean,
@@ -27,7 +27,7 @@ export function useGanttTaskList<F extends Filter>(
 	const tasks = ref<Map<ITask['id'], ITask>>(new Map())
 
 	async function fetchTasks(params: GetAllTasksParams, page = 1): Promise<ITask[]> {
-		const tasks = await taskCollectionService.getAll({listId: filters.listId}, params, page) as ITask[]
+		const tasks = await taskCollectionService.getAll({listId: filters.value.listId}, params, page) as ITask[]
 		if (options.loadAll && page < taskCollectionService.totalPages) {
 			const nextTasks = await fetchTasks(params, page + 1)
 			return tasks.concat(nextTasks)
@@ -35,15 +35,26 @@ export function useGanttTaskList<F extends Filter>(
 		return tasks
 	}
 
-	async function loadTasks(filters: F) {
-		const params: GetAllTasksParams = filterToApiParams(filters)
+	/**
+	 * Load and assign new tasks
+	 * Normally there is no need to trigger this manually
+	 */
+	async function loadTasks() {
+		const params: GetAllTasksParams = filterToApiParams(filters.value)
 
 		const loadedTasks = await fetchTasks(params)
 		tasks.value = new Map()
 		loadedTasks.forEach(t => tasks.value.set(t.id, t))
 	}
 
-	watchEffect(() => loadTasks(filters))
+	/**
+	 * Load tasks when filters change
+	 */
+	watch(
+		filters,
+		() => loadTasks(),
+		{immediate: true, deep: true},
+	)
 
 	async function addTask(task: Partial<ITask>) {
 		const newTask = await taskService.create(new TaskModel({...task}))
@@ -83,6 +94,8 @@ export function useGanttTaskList<F extends Filter>(
 		tasks,
 
 		isLoading,
+		loadTasks,
+
 		addTask,
 		updateTask,
 	}