[Typo3] HR disappearing in RTE

[Daniel Parrott]

Hi list,

I'm having a problem with <HR> tags disappearing in the RTE. Source view
before saving looks like: <P>
<HR>
<P>

After one save an extra line is introduced: <P>
<HR>

<P>

After two saves the HR is gone:
<P>&nbsp;</P>

The HR tags are also disappearing when included in text and sometimes take
some of the content along with them. Has anyone seen/solved this or
similar? Any help really appreciated because it's driving me nuts.

Thanks,
Daniel

Setup - I'm using Typo3 3.7.0 on (I think) Red Hat 7.2. RTE TSConfig
(including rte_conf ext.) is as follows:

RTE.default {
  proc.preserveTables = 1
  showButtons = cut,copy,paste,fontstyle,fontsize,textcolor,table
  hideButtons = class,user,chMode
}
}
#shotgun approach
RTE.default.showButtons=table,line,fontstyle,fontsize, textcolor
RTE.default.proc{
  dontConvBRtoParagraph = 1
      allowTags =
      table,tr,td,p,div,img,hr,a,br,pre,strong,em,li,ul,ol,span,h1,h2,h3,h4,h5,h6,dl,dt,dd,font,blockquote
      entryHTMLparser_db = 1
      entryHTMLparser_db.allowTags =
      table,tr,td,p,div,img,hr,a,br,pre,strong,em,li,ul,ol,span,h1,h2,h3,h4,h5,h6,dl,dt,dd,font,blockquote
      exitHTMLparser_db = 1
      exitHTMLparser_db.allowTags =
      table,tr,td,p,div,img,hr,a,br,pre,strong,em,li,ul,ol,span,h1,h2,h3,h4,h5,h6,dl,dt,dd,font,blockquote
      entryHTMLparser_rte = 1
      entryHTMLparser_rte.allowTags =
      table,tr,td,p,div,img,hr,a,br,pre,strong,em,li,ul,ol,span,h1,h2,h3,h4,h5,h6,dl,dt,dd,font,blockquote
      exitHTMLparser_rte = 1
      exitHTMLparser_rte.allowTags =
      table,tr,td,p,div,img,hr,a,br,pre,strong,em,li,ul,ol,span,h1,h2,h3,h4,h5,h6,dl,dt,dd,font,blockquote
}