Dear list,

With the example below (perhaps not minimal, but I have stripped out as 
much as I could), the second page is set completely in the color of the 
overlay. This also happens when a layer is used instead of an overlay. 
When tagging is turned off, the colors are what they should be. When a 
few lines are removed from the first page, the colors are correct as 
well, but ...

Attached is the resulting pdf.

LMTX 20191206 only. MKIV 20191206 is fine.

Error on my part, or bug?

    % \definelayer       [WatermarkOverlay]
    %                    [repeat=yes,
    %                     width=\paperwidth,
    %                     height=\paperheight]
    % \setlayerframed    [WatermarkOverlay]
    %                    [preset=center]
    %                    [foregroundcolor=red,frame=off]
    % {\scale[factor=max]{\rotate[rotation=60.0]{~Oops!~}}}

    \defineoverlay       [WatermarkOverlay]
                          [{\framed[frame=off,
                                    foregroundcolor=red]
                           {\scale[factor=max]
                            {\rotate[rotation=60.0]
                             {~Oops!~}}}}]

    \setupbackgrounds    [page]
                          [background=WatermarkOverlay]

    %setuptagging        [state=stop]
    \setuptagging        [state=start]

    \setuplanguage       [en]
                          [spacing=packed]
    \setupinterlinespace [2.2ex]
    \definenarrower      [MidOneEm]
                          [middle=1em]
    \setuplayout         [topspace=0.25in,
                           footerdistance=0in,
                           height=fit,
                           width=27em,
                           footer=0.5in,
                           bottom=0.25in,
                           backspace=1.1in]
    \definepapersize     [octavo]
                          [width=6in,
                           height=9in]
    \setuppagenumbering  [location=]
    \setuppapersize      [octavo]
    \setupbodyfont       [Termes,10pt]

    \starttext

    \starttitle          [title={Naaaa aa aaa aaaa}]

    \startsubject        [title={Baaaaaaaa}]
       Faaa aaa {\em Naa Yaaa Taaaa} aaaaaaaa aa Caaaa 22, 9990 (aaaa
       999):
    \startnarrow         [MidOneEm]
       {\bi Maaaaaaa Faaaaa, 86; Raaaa Laaa aaa Paaaaa Ta Baaaaa a Laaaaa}

       Da.~Faaaaa, a aaaaaaaa aa aaa Jaaaaa Iaaaaaaaa aa Raaaaaaa, aaaaaa aa
       aaaaa aaaa Taaaaa Iaaaaa aa Waaaaaaaaa Haaaaaa aaaa 1925 aa 1928. Ha
       aaa aaaa aaaaa aaaaaa aaaaa aa Caaaaaaaaaaa Taaaaa Raaaaa Saaaaa aaa
       aa Maaaa 1930 aaaaa aaa aaaaaaaaaaaa aaaa a aaa aaaaaa aa 83a Saaaaa
       aaa Caaaaaa Paaa Waaa. A aaaaa aaaaa, aa aaaaaaaa aaaa aaa aaaaaa
       aaaaaaaaa, aaaaaaa aaaa aa aaaaaa aa aaaaa aaa aaaaaaaaaa aa aaaaaa
       “aaaaaaa aaaaaaaaa aaaaaaaaaaaaa aaaaaaaaa.”

       “Paaaaaaaa aaaaaaaaa aaaaaa,” Raaaa Faaaaa aaaa aa aaa aaaaaa aa
       aaaaaaaaaaa, “aaa aaaaa aaaa aaaaaa aa aaaaaaaaaa, aa aaaaaaaaa,
       aa aaaaaaaaaaaaa, aa aaaaaaaaaa aaaaaaa aaaa aaa aaaa aaaaaa aa
       aaaaaaaa aaaaaa aaa aaaaaaaaaa, aaaa aaaaa aaaaaa aaaaaa aaaaaaaa aaa
       aaaaaaa aaaa. Taa aaaaa aaaaaaa aa aaaaaaa aaaaaaaa, aaaaaaaaaaa aaa
       aaaaaaaaaaa aaaaaaaaa aaaaa.”

       Eaaaaaa, aa aaa aaaaaaaaa Paaaaaaaaaa aa a “aaaaaaaa aaaaa” aaa
       aaa aaaaaaaaa aaa Saaaaaaaa Paaaa aaa aaa Paaaaaaaaaaa aaaaaaaaaaa aa
       Naaaaa Taaaaa.

       Aaaaaaa aaaaaa aaa aaaaaaaaaaaa aa aaa aaaaaaaa aaaaa.

       Aaaaa aaaaaaaaaa aaaa Caaaaaaa Uaaaaaaaaa Laa Saaaaa aa 1933, aa aaa
       aaa aaaaaa aaa aaa Aaaa-Naaa Laaaaa aaa aaaaaaa aaa Gaaaaa-Aaaaaaaa
       Baaa. Ha aaa aaaa aaaaaaa aa aaa Naa Yaaa Baaaa aa Raaaaa aaa
       aaaaaaaaaaa aa aaaaaaaaaaa aaa. Ha aaaaaa aaaaa aaaa aa aaa
    aaaaaa aaa
       aa Naa Yaaa Saaaa.
    \stopnarrow

       Faaaaa aaaa aaaaaa aa aaa aaaaaaaa aaa aaa aaaaaaaaaaaaa aa aaa
       Raaaaaaaaaaaaaaaa Raaaaaaaaa Caaaaaa.

       Aaaaaaaaa aa aaa Faaaaaaa 30, 1967 {\em Naa Yaaa Taaaa} aaaaaaaa
       (aaaa 38), aaa aaaa, Da.~Eaaaaa Oaaaaaa Faaaaa, aaa a aaaaaaaa aaaaaa
       aa {\em Taa Jaaaaaa aa Daaaaaa}. Saa aaa a aaaaaaaa aaa aaaaaaa
       aaaaaaaaa aaa aaaaaaaa aaaaaaaa aa aaaaaaaa aaaaaaaaaa aaa aaa
       Iaaaaaaaaa aa Raaaaaaa aaa Haaaaa aaaaaa aa aaaa aaaaaaaaaaaaa aaaa.

       Taa Faaaaa’a aaaaaa aaa, Faaaaaaa M.~Faaaaa (1894–1949) aaa a
       aaaaaaaaa aa aaaaaaaaa aa MIT. Taaaa aaaaaaa aaa, Waaaaa A.~Faaaaa
       (aaaaaaa aaaa I aaaaaaaa aaa aaaaaa’a aaaaaaaaaa aa aaaaaaaaa aaa
       aaaa) aaa aa aaa aaaaaaaa aaaaa aa aaa U.S.~Haaaaaaaa Maaaaaaa Maaaaa
       aaa aaaaaa aa Daaaaaaa aa Raaaaaaa aaa aaaa aaa Caaaaaaaaa aa Jaaaaa
       Maaaaaaa Caaaaa Aaaaaaa Gaaaaaa aaa aaa Waaaa Jaaaaa Raaaaaaaaaa
       Oaaaaaaaaaaa.%
    \startfootnote
       Taaaa aaa aa aaaa aaaaa aaaa I aaaa aa Da.~Faaaaa aa aaaaaaaaa
       aaaaaaaaa aa aaa aaaaaa’a aaaa.
    \stopfootnote
    \ Taaaa aaaaaaaa, Jaaaaa Faaaaa Haaaaaaaa, aaa a aaaaaa aaaaaa aaa aaaa
       aaaaaaaa aaaaa aa aaaaaa aaa aaaaaa aaaaaaaaaa.
    \stopsubject

    \startsubject        [aaaaa={Eaaaaa}]
       Taa aaaaaaaaa aaaaa aaaaa aaaaa aa aaa aaaaaaaa aaa aaaaaaaa:

       Oaaaa aaaaa aaa aaaa aaaaaa a aaaaaa aa aa aaaaaaaaaaaaa.
    \stopsubject

    \stoptitle
    \stoptext

-- 
Rik