Previous filters are not cleared after restoring state on a Grid

[jsakalos]

Confirmed, it behaves as described in the last post. Here is screencast:

Forum post

On the state demo, https://bryntum.com/examples/grid/state/ if user restores the state, the previous filter is kept after clearing or typing a new filter value

1. filter a column
2. save state
3. refresh the example
4. restore the state
5. clear existing filter
6. the filter is kept and if user types other filter value it's added to the collection filters currently applied.

Demo attached.

Is there a workaround for this?