run_look when result_format=png returns cached result even if cache=false & cache_only = false

[karl11]

Params cache = false & cache_only = false work correctly when running run_look, as seen in image, recent weeks are returned in the response when result_format = json. However when result_format = png, the most recent week shown in the resulting chart is 25th of May, 1 month ago.
(apparently new users can only post 1 image, so im posting the response when result_format = json)
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