v-for optimization: only filter watcher list if there are frags removed
v-for optimization: only filter watcher list if there are frags removed

th0r/vue,th0r/vue,shupan123/vue-fixed-type,shupan123/vue-fixed-type,fergaldoyle/vue,th0r/vue,shupan123/vue-fixed-type,fergaldoyle/vue,fergaldoyle/vue