Using `.diff` function for dates inside multiple lookupIssues block uses wrong arguments

Issue Summary

When you combine the use of a lookupIssues block and the diff function, when there are multiple issues, the diff function remembers the argument for the first issue, and uses it for all subsequent issues (rather their using the argument for each respective issue).

Steps to Reproduce

Create an automation rule with the following specs:

1. Trigger: Scheduled
2. Action1: Lookup Issues
   1. Lookup 2+ resolved issues (with different resolved times)
3. Action2: Add "Log Action" action with this smart value:

1. 1. {{#lookupIssues}} {{key}} From {{created}} till {{resolved}} --- {{created.diff(resolved)}}  \\ {{/}} 

Expected Results

SP-6 From 2023-02-07T06:53:00.0+0000 till 2023-02-07T07:31:12.6+0000 --- 38 minutes 12 seconds \\
SP-5 From 2023-02-07T06:52:44.9+0000 till 2023-02-07T06:53:04.1+0000 ---  0 minutes 20 seconds \\ 

Both diffs should be correct: 38m 12s, then 0m 20s.
h3. Actual Results

SP-6 From 2023-02-07T06:53:00.0+0000 till 2023-02-07T07:31:12.6+0000 --- 38 minutes 12 seconds \\
SP-5 From 2023-02-07T06:52:44.9+0000 till 2023-02-07T06:53:04.1+0000 --- 38 minutes 27 seconds \\ 

The reason is that the diff function is using the resolvedDate from the first Issue (SP-6) instead of the resolvedDate from the current issue (SP-5).

Workaround

Currently there is no known workaround for this bug.