Kérdés Dropdown Tags sorting by backend order, how to do it?

No, sorry, it is not possible at this moment. Since the Tags component does not use a simple field (usually 'orderig') to establish an ordering in the backend for the tags, but a much more complex schema, involving at least 3 (sometimes 4, "lft', 'rgt', 'level', 'path') fields, this can be done simply by adding one or more parameters to the query powering the module. Too much effort for a free module.
Maybe if someone, sometime hire me to develop that, and agrees to share the outcome with the community (this is the way how most of freebies here are where written) we will have this ordering option too.