%%CURRENT_DATETIME%% in post function doesn't set the correct date on Date Picker fields

Issue Summary

When you create a post-function on the workflow to add %%CURRENT_DATETIME%% on a custom field Date Picker field, it comers one day after date. It depends on what time you trigger this post-function.
Here we have an example:

Steps to Reproduce

1. Add a post-function on the workflow to edit Date Picker field with %%CURRENT_DATETIME%%;
2. Perform the steps to trigger the post-function;
3. Normally it happens at the end of the day;

Expected Results

Date in Date Picker field displays the correct date. (i.e. in the user's timezone)

Actual Results

Date in Date Picker field displays the wrong date. (it displays the date using the Jira System timezone settings)

Workaround

Currently, there is no workaround using a Date Picker Field for this matter.

However, a Date/Time Picker Field could be utilized instead, which will correctly display the date and time in the user's timezone.