Steps to reproduce:

• Import the host zbx_calculated_item.yaml
• Open the calculated item from the imported host and press test button
• Press button "Get value and test"

Result: with VAR1 value \x server receives:

count(//trap[1], #10, "eq", "\\x") and count(//trap[1], #10, "eq", "\\x")

Note: in this case that happens even for non macro parameters.

Expected:

count(//trap[1], #10, "eq", "\x") and count(//trap[1], #10, "eq", "\x")