Premiere adds a few stop frames in time line during import

I have a feeling that it somehow instantly upon import reinterprets the footage and changes frame rate, or bitrate, or something intangible, although both the sequence and footage have the same frame rate- 25 fps. And it only affect part of the footage at the end for some reason. If someone put a curse on this partular part of the sequnce, I am cool with that explanation))

Problems I am having are with Premiere, similar setup in After Effects does not add stop frames on import... Like when I am importing footage in sequence. Here is a screenshot of my udated sequence settings, where I turned off depth, quality and linear color, to no avail(

tried to turn off all tree, imported footage and it adds stop frames still( instantly on import...

You are using interlaced footage in a progressive sequence.

Might want to turn off max render and depth and composting in linear color.

Thank you for the additional information @Yura Timoshenko . What are your delivery specs meant to be? It looks like you may be working with interlaced footage. Do you have a screenshot of your After Effects sequence settings?

and here is a MediaInfo data for good video source that I insert in time line before it adds stop frames

they are always the same, pretty standart. 

Still missing screenshot sequence settings.

So I tried to create a new sequence with standart setup - 120x1080 25 fps, import another version of the same footage and again it adds those stop frames)))) one can become superstitious very easily under circumstances. Although if I use After Effects repeating the same steps, importing the same footage, no frame stop issue at all, as it was before all these years))) Surely I can just use AE instead of Pr to prepare projects, but still I do not want to leave this issue unresolved )))