filtering by filter function and having a shift

I have a signal and applied a filter by using filter function in matlab (the built in filter function of matlab). I added padding to my data. now my filtered signal has a shift equal to the padd compared to the initial signal ( I should mention I added padding to the initial signal too). The final output of the filter is equal to the input signal but I dont know where these shift in the signal is arising from. I added a screenshot of the initial and filterd signal. the blue channel is the initial signal and the orange one is the filtered signal.

Answer 1

[Star Strider]

See if using the filtfilt function instead of filter solves the problem.

[2NOR_Kh]

thank you Star, it was a great help.

[Star Strider]

As always, my pleasure!