Probleme mit Formatierungen innerhalb von Textabschnitten

Hallo Forum. Folgendes Problem:
Mein RTE funktioniert prima, nur Textformatierungen innerhalb von Abschnitten (also p-tags) funktionieren nicht. Ich kann ganze Abschnitte mit dem "bold"-Button Fett formatieren, wenn ich das allerdings für ein einzelnes Wort oder auch mehrere Wörter innerhalb des Abschnittes versuche, funktioniert es leider nicht mehr. Woran kann das liegen? Hier meine RTE-Konfiguration:

RTE.classesAnchor {

    internalLink {
        class = internal-link
        type = page
        image >
    }

    externalLink {
        class = external-link
        type = url
        image >
    }

    externalLinkInNewWindow {
        class = external-link-new-window
        type = url
        image >
    }

    internalLinkInNewWindow {
        class = internal-link-new-window
        type = page
        image >
    }

    download {
        class = download
        type = file
        image >
    }

    mail {
        class = mail
        type = mail
        image >
    }

}

RTE.default {

    # Editor CSS
    contentCSS = fileadmin/templates/rte_formats.css
    useCSS = 1
    showTagFreeClasses = 0

    ignoreMainStyleOverride = 1

    # Configuration of the editor-buttons
    showButtons = undo, redo, bold, underline, blockstyle, blockstylelabel, unorderedlist, insertcharacter, link, removeformat, insertcharacter, copy, cut, paste
    hideButtons = subscript, superscript, italic, left, center, right, orderedlist, image, toggleborders, showhelp, acronym, outdent, indent, justifyfull, findreplace, chMode, textcolor, bgcolor, textindicator, emoticon, user, fontsize, strikethrough, lefttoright, righttoleft, fontstyle, formatblock, spellcheck, inserttag, table, tableproperties, rowproperties, rowinsertabove, rowinsertunder, rowdelete, rowsplit, columninsertbefore, columninsertafter, columndelete, columnsplit, cellproperties, cellinsertbefore, cellinsertafter, celldelete, cellsplit, cellmerge, line, about, textstyle, textstylelabel

    # Markup options
    enableWordClean = 1
    removeTrailingBR = 1
    removeComments = 1
    removeTags = center, sdfield, font
    removeTagsAndContents = script

    # Keep RTE groups together
    keepButtonGroupTogether = 1

    # Hide the statusbar of the editor
    showStatusBar =  0

    proc {

        entryHTMLparser_db {
            tags {
                # Replace b and i tags
                #b.remap = strong
                #i.remap = em
                p.allowedAttribs = class,style,align,id
                span.allowedAttribs = class,style,align,id
            }
        }

        # CSS-Classes
        classesParagraph (
            align-left, align-center, align-right
        )

        # Allowed and forbidden tags
        allowTags = h1, h2, div, p, br, span, ul, li, strong, em, b, i, u, sub, sup, strike, a, font
        denyTags = table, tbody, tr, th, td, ol, re, blockquote, center, acronym, img, nobr, hr, tt, q, cite, abbr, h3, h4, h5, h6

        # Do not convert br into p
        dontConvBRtoParagraph = 1

        # Tags that are allowed outside of p or div
        allowTagsOutside = span

        # Allowed attributes in p, div tags
        keepPDIVattribs = xml:lang,class,style,id,_moz_dirty
 
        # List all class selectors that are allowed on the way to the database
        allowedClasses (
            header2, external-link, external-link-new-window, internal-link, internal-link-new-window, download, mail
        )       

    }

}

RTE.default.classesParagraph = header2

RTE.classes.header2{
    name = Überschrift
}