TOI-178 normalised light curve of the second visit (grey symbols) shown in the top panel with its 10 min smoothed version overplotted (blue symbols). The flux jumps produced by the appearance of a new hot pixel are marked with the dashed vertical lines. The light curve of the detected telegraphic pixel is presented in the middle panel, showing its anomalous behaviour at the end of the visit. The light curve extracted from the corrected data is shown in the bottom panel. For better visualisation, the light curves are presented after a 3σ clipping andcorrected by a second-order polynomial in time.