Describe the bug
When I click on a 3rd level filter on Chrome, I don't see the proposals of this scope but on other scopes.

To Reproduce
Steps to reproduce the behavior:

1. Go to Proposals on a Participatory Process
2. On filter sidebar, click on expand button on Ciutat scope
3. Click on expand button on Ciutat Vella subscope
4. Click on "la Barceloneta" sub sub scope
5. See that the proposals filtered are not from la Barceloneta

Expected behavior
To see the proposals filtered by that sub sub scope. Is the same on any other sub sub scope.

Screenshots

Good behaviour (tested on Firefox and Microsoft Edge):

URL: https://www.decidim.barcelona/processes/PressupostosParticipatius/f/3768/proposals?filter%5Bsearch_text%5D=&filter%5Bstate%5D%5B%5D=&filter%5Bstate%5D%5B%5D=accepted&filter%5Bstate%5D%5B%5D=evaluating&filter%5Bstate%5D%5B%5D=not_answered&filter%5Bscope_id%5D%5B%5D=&filter%5Bscope_id%5D%5B%5D=93&filter%5Bcategory_id%5D%5B%5D=&filter%5Borigin%5D%5B%5D=&filter%5Bactivity%5D=&filter%5Bactivity%5D=all&filter%5Brelated_to%5D=&filter%5Brelated_to%5D=

Bad behaviour:

URL: https://www.decidim.barcelona/processes/PressupostosParticipatius/f/3768/proposals?locale=es&filter%5Bsearch_text%5D=&filter%5Bstate%5D%5B%5D=&filter%5Bstate%5D%5B%5D=accepted&filter%5Bstate%5D%5B%5D=evaluating&filter%5Bstate%5D%5B%5D=not_answered&filter%5Bscope_id%5D%5B%5D=&filter%5Bscope_id%5D%5B%5D=93&filter%5Bcategory_id%5D%5B%5D=&filter%5Borigin%5D%5B%5D=&filter%5Brelated_to%5D=&filter%5Brelated_to%5D=

Stacktrace
N/A

Extra data (please complete the following information):

• Device: Desktop
• Device OS: Linux Mint 19.3, Windows 10 Enterprise Evaluation
• Browser: Chrome 80.0.3987.132 (Build oficial) (64 bits)
• Decidim Version: 0.21.0
• Decidim installation: Decidim Barcelona

Additional context
Related with #5602