Formatting text in Mathematica should be a punishment for serious crimes.
I've face another frustrating feature, and I don't know how to get rid of it.
tekst = StringJoin @@ Array["tekst " &, 15]; Composition[ Grid[{{#, Graphics[Inset@#]}}, Frame -> All] &, Panel[#, ImageSize -> {150, 100}] &, Style[#, LineIndent -> 0] & ][tekst] 
Those texts should look the same imo. The only difference is that the one in Graphics is not formatted as it should be.
Boxes look well and I don't know what causes that:
... PanelBox[ StyleBox["\<\"tekst tekst ... tekst \"\>", StripOnInput->False, LineIndent->0], ImageSize->{150, 100}], GraphicsBox[InsetBox[ PanelBox[ StyleBox["\<\"tekst ... tekst \"\>", StripOnInput->False, LineIndent->0], ... I was trying to set FormatType for Insetor BaseStyle for Graphics or ParagraphIndent -> 0. But with no avail :/.
Help me please :P

TextAlignment -> Leftto theStyle. I think the default for graphics is to centre text. $\endgroup$