How to reproduce:
click on the search symbol
search for an E-Mail
click on the "x"

actual result:
clicking on the x-symbol leads to closing the search field. The sample of displayed E-Mails stays filtered for the searched term.
For ending the search one has to first erase the term via the wastebin symbol and than close the search window (with "x")

Expected result
Pressing the "x" should automatically do both: Deleting the search term and closing the serach field.

Having only one button does not rise the question, which one does what.
Combining the functions ending & closing the search eliminates the risk of not noticing an active search.
Furthermore, the symbol of a wastebin implies to result in deleting something and one is note sure that this "something" will not be the searched and found e-mails. So there is a high inhibition threshold to click on the symbol.

The task is for mobile and desktop. (Below the mobile version)