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[en] A recent publication (DESY 18-171) claimed evidence for parity violating effects, following an analysis of helicity-dependent energy spectra recorded with the HERA transverse polarimeter. This note is trying to highlight two of the weak points of the analysis. Firstly, the claim of DESY 18-171 is made without presenting a calculation of the Compton cross section in presence of the stated parity violating effects. Secondly, the fit parametrisation given in DESY 18-171 is ill-defined, such that the fit is underconstrained. It is thus concluded that the analysis can not be trusted and the conclusions drawn on "Evidence for parity violation" are invalid.