[2.9] viscous digi doesn't work correctly

[SP8EBC]

There is a digipeater configured as below. It shall work as viscous fill in digi. The viscous-delay is set to 2, which according to UM shall give 2 to 5 seconds of delay.

Unfortunately I see in RF-LOG that the stations gets a direct packet from SQ8MAE-5, then it heard another digi re transmitting it, but regardless this my station re transmit it's even admittedly it shoudn't

2021-12-23 16:11:04.858 SR8WXD    R SR8NZ>APMI01,WIDE2-1:;SQ8GBG   *231611z4936.65N/02131.93EyJerzy tel. 48-603-251-380
2021-12-23 16:11:06.278 SR8WXD    R SR8NZ>APMI01,SP8SD-15*,WIDE2*:;SQ8GBG   *231611z4936.65N/02131.93EyJerzy tel. 48-603-251-380
2021-12-23 16:11:09.768 SR8WXD    R SR8NZ>APMI01,WIDE2-2:;SQ8OAU   *231611z4934.57N/02151.89EyZibi Rymanow
2021-12-23 16:11:11.006 SR8WXD    R SR8NZ>APMI01,SP8SD-15*,WIDE2-1:;SQ8OAU   *231611z4934.57N/02151.89EyZibi Rymanow
2021-12-23 16:11:12.474 SR8WXD    R SR8NZ>APMI01,SP8SD-15*,SR8NDR*,WIDE2*:;SQ8OAU   *231611z4934.57N/02151.89EyZibi Rymanow
2021-12-23 16:11:14.623 SR8WXD    R SQ8MAE-5>APMI03,WIDE2-2:T#083,178,000,000,100,088,00000000
2021-12-23 16:11:14.725 APRSIS    R SP8RHQ-1>APMI06,TCPIP*,qAC,T2POLAND:@231611z5017.72N/02228.04E_158/004g011t026r000p000P000h78b09992
2021-12-23 16:11:14.933 APRSIS    R SP8RHQ-1>APMI06,TCPIP*,qAC,T2POLAND:@231611z5017.72N/02228.04E_WX3in1Plus2.0 U=11.9V,T=22.1C/71.7F
2021-12-23 16:11:15.889 SR8WXD    R SQ8MAE-5>APMI03,SP8SD-15*,WIDE2-1:T#083,178,000,000,100,088,00000000
2021-12-23 16:11:16.217 SR8WXD    T SQ8MAE-5>APMI03,SR8WXD*,WIDE2-1:T#083,178,000,000,100,088,00000000
2021-12-23 16:11:20.053 APRSIS    R SP8RHQ-1>BEACON,TCPIP*,qAC,T2POLAND:> op.Janusz [email protected]
2021-12-23 16:11:24.227 SR8WXD    T SR8WXD>APRS:}SP8RHQ-1>BEACON,TCPIP,SR8WXD*:> op.Janusz [email protected]

snippet from configuration

<source>
        source          $mycall
        relay-type      directonly      # default mode is "digipeated"
        viscous-delay   2               # no viscous delay for RF->RF digipeating
        ratelimit       10 20   # default: average 60 packets/minute,
                                #          burst max 120 packets/minute
        <wide>
                maxreq 2
                maxdone 2
                keys WM,SP
        </wide>

        <trace>
                maxreq 2
                maxdone 2
                keys WIDE
        </trace>
#    ##  filter         a/la/lo/la/lo  # service area filter
        filter         -b/SR*        # always block these
        filter          t/*
</source>