Geometry problem with twoside and list of tables

Question

I created my first minimal working example for this Problem, I'm kinda proud! Hopefully it's correct. (I had to use so many "blindocuments" to get a TOC with more than one page)

I have a problem with the geometry package. I use "twoside" for defining margins for printing. I chose extra obvious margins for this example.

If you uncomment the 3 lines in my code (and delete the geometry-stuff) latex has no hiccups and always keeps the margins correct for the whole document. If I use geometry (which I really want, as I don't want to be stuck with a4paper-margins, but want to increase the used space on each side) Latex has a Hiccup at the List of figures. (With Hiccup I mean, Latex has the same margins on the 2 following pages, which means from this point on alle the margins are on the wrong side)

In my real document the problem starts even earlier, with my TOC starting on a left page with margins from a right page and the List of Tables suddenly on the correct side... (left page with left margins)?

I would be grateful for either a hint on how to fix the geometry package behaviour. Or another method to increase the usable space of a page (mostly on the bottom, I really dislike, that there is so much white).

\documentclass[twoside, openany]{scrreprt} 
\usepackage{blindtext}
\usepackage{geometry}

%% Following line mixes up left/right Page at List of Tables
\geometry{twoside,bindingoffset=4cm, top=2.75cm,bottom=2.75cm,inner=3cm,outer=3cm}

%% Following 3 lines never mix up left/right pages, but I cannot increase the size of the page (if I don't do it, my Thesis will look too long)
%\setlength{\oddsidemargin}{2cm} %% Außenränder
%\setlength{\evensidemargin}{-2cm} %% Innenränder
%\setlength{\topmargin}{-2cm}

\begin{document}    

\blindtext % This is supposed to be my abstract which HAS to appear before TOC

\pagenumbering{Roman} 
    \tableofcontents
    \listoffigures 
    \listoftables  % Here is where the error happens!

\pagenumbering{arabic}
\blinddocument
\Blinddocument
\Blinddocument
\Blinddocument
\blinddocument
\Blinddocument
\Blinddocument
\blinddocument
\Blinddocument
\Blinddocument
\Blinddocument
\Blinddocument
\Blinddocument
\Blinddocument
\blinddocument
\Blinddocument
\end{document}

Just wanna say: I already noticed that the list of tables has an Arabic page number, even though it should have an roman one... I fixed that in my real document already by using following code just before the list of tables:

\pagenumbering{Roman} 
\setcounter{page}{7} %% corresponds to the length of TOC and LOF

Answer 1

When you change the numbering system in the middle of a document (imho today not really needed and senseful) then you should in a twoside document add a \cleardoublepage before the \pagenumbering. Without it you can have two right pages after another as latex doesn't use the absolute page number to decide if a page is odd or even but the current page number.

\documentclass[twoside, openany]{scrreprt}
\usepackage{geometry}

\geometry{twoside,bindingoffset=4cm, top=2.75cm,bottom=2.75cm,inner=3cm,outer=3cm,showframe}


\begin{document}


\pagenumbering{Roman}
blb
\cleardoublepage %compare with \clearpage
\pagenumbering{arabic}
blb
\end{document}