It has happened me few times, with good (bad) timing. Last time it happened when in the beginning of Germany versus France game I was looking through the eyes of a marine in the MS and I was trying to record a demo. The server was running amxx with these plugins:
CODE
Metamod v1.19p31 2007/04/05 (5:13)
by Will Day
http://www.metamod.org/
Patch: Metamod-P (mm-p) v31
by Jussi Kivilinna
http://metamod-p.sourceforge.net/
compiled: Apr 5 2007, 11:06:24 EET (optimized)
[ 1] Admin Base 1.76d AMXX Dev Team admin.amxx running
[ 2] Admin Commands 1.76d AMXX Dev Team admincmd.amxx running
[ 3] Admin Help 1.76d AMXX Dev Team adminhelp.amxx running
[ 4] Admin Chat 1.76d AMXX Dev Team adminchat.amxx running
[ 5] Anti Flood 1.76d AMXX Dev Team antiflood.amxx running
[ 6] Info. Messages 1.76d AMXX Dev Team imessage.amxx running
[ 7] Admin Votes 1.76d AMXX Dev Team adminvote.amxx running
[ 8] TimeLeft 1.76d AMXX Dev Team timeleft.amxx running
[ 9] Pause Plugins 1.76d AMXX Dev Team pausecfg.amxx running
[ 10] Idle Player Remover 1.76d AMXX Dev Team idlekicker.amxx running
[ 11] NS Commands 1.76d AMXX Dev Team nscommands.amxx running
[ 12] UnStuck 1.76d AMXX Dev Team unstuck.amxx running
[ 13] Admin Icons (NS3.2) 3.2 sawce icons.amxx running
But I have no idea if they affected it at all. I'm pretty sure that has happened to me before when I have been watching games on non-MM/AMXX servers.
I reproduced the bug by making HLTV replay demo of the match and try recording a demo via Marine Eyes in MS when the game is about to start. The demo recording works outside the Start Time but not when the game is about to start.
Its not a serious issue as I can just avoid it by recording games a bit sooner/later but possibly a ns-related bug.