Steps to reproduce:

• Go to monitoring/hosts
• select "Graphs" from a host
• all graphs of the selected host are displayed (screen1.png)
• filter on tag "filesystem"
• all graphs with tag "filesystem" are displayed (screen2.png)
• add "usage" to the name filter and press apply
• page reloads and all graphs are displayed which containing usage because the selected filter tag "filesystem" is removed. (screen3.png)

This behaviour was seen after patch ZBX-25930.

Expected:

• click on apply button should not delete the selected filter tags.