Incorrect low score in final display, when in TB position and last iteration is unfinished

[Matthies]

Visible in many TB outplays at TCEC and CCC.

73577714 >RubiChess 20250719(38): position startpos moves g1f3 g8f6 c2c4 g7g6 g2g3 f8g7 f1g2 e8g8 d2d4 d7d6 b1c3 c7c6 e1g1 d8a5 h2h3 c8f5 d1e1 e7e5 e2e4 e5d4 f3d4 f8e8 c1f4 b8d7 a1d1 d7c5 d4f5 g6f5 e1d2 f5e4 f4d6 c5d3 d6a3 a8d8 c3e4 a5d2 e4d2 g7f8 d2b3 f8a3 b2a3 d8d7 b3a5 e8d8 d1b1 d3c5 f1e1 h7h6 a5b3 c5b3 a2b3 d7d2 b3b4 d2a2 b1a1 a2a1 e1a1 d8d4 g2f1 b7b6 a1e1 g8f8 g1g2 f6e4 e1e3 f8g7 f1e2 c6c5 h3h4 a7a5 f2f3 e4d6 b4a5 b6a5 g2f2 g7f6 e3d3 d4d3 e2d3 f6e5 f2e3 f7f5 g3g4 f5f4 e3d2 e5f6 d2c3 d6c8 d3f5 c8b6 c3d3 f6e5 f5g6 e5f6 g6e8 f6e6 e8c6 e6d6 c6b5 d6e5 b5e8 e5e6 e8c6 e6d6 c6d5 d6e5 d5b7 b6d7 b7a6 d7f8 a6c8 f8g6 h4h5 g6h8 g4g5 h6g5 h5h6 h8g6 c8g4 g6f8 g4h5 e5f5 d3c2 f5f6 c2b3 f8d7 b3a4 g5g4 f3g4 d7f8 g4g5 f6g5 h5d1 g5h6 a4a5 h6g5 a5b6 f8d7 b6c6 d7e5 c6c5 g5f6 c5d5 f4f3 a3a4 f3f2 d1e2 e5g6 d5c6 g6e7 c6b6 e7f5 c4c5 f5d4 e2c4 f6e5 c5c6 d4f5 c6c7 f5e7 b6b7 f2f1n c4f1 e7f5 c7c8q f5d6 b7c7 d6c8 c7c8 e5d4 a4a5 d4e3 a5a6 e3f2 a6a7 f2f1 a7a8q f1e2
73577714 >RubiChess 20250719(38): go wtime 3934 btime 4057 winc 3000 binc 3000
73577762 <RubiChess 20250719(38): info depth 1 seldepth 2 multipv 1 time 0 score cp 12996 nodes 53 nps 208280 tbhits 0 hashfull 0 pv a8e4 e2f1 
73577762 <RubiChess 20250719(38): info depth 3 seldepth 6 multipv 1 time 0 score cp 12996 nodes 477 nps 1240533 tbhits 0 hashfull 0 pv a8e4 e2f2 c8b7 f2g1 
73577762 <RubiChess 20250719(38): info depth 4 seldepth 8 multipv 1 time 0 score cp 12996 nodes 2015 nps 3431165 tbhits 0 hashfull 0 pv a8c6 e2d2 c6g6 d2e1 
73577762 <RubiChess 20250719(38): info depth 5 seldepth 8 multipv 1 time 1 score cp 12996 nodes 9510 nps 8671437 tbhits 0 hashfull 0 pv a8a2 e2d3 a2e6 d3d2 e6g6 d2e1 
73577762 <RubiChess 20250719(38): info depth 6 seldepth 10 multipv 1 time 3 score cp 12996 nodes 108972 nps 35988491 tbhits 0 hashfull 0 pv c8b7 e2f3 a8b8 f3e4 b7c7 e4f4 
73577764 <RubiChess 20250719(38): info depth 7 seldepth 10 multipv 1 time 5 score cp 12996 nodes 458338 nps 76939527 tbhits 0 hashfull 0 pv a8e4 e2f2 e4f4 f2g2 f4e3 g2h2 e3g5 h2h1 
73577771 <RubiChess 20250719(38): info depth 8 seldepth 12 multipv 1 time 13 score cp 12996 nodes 2531761 nps 191415851 tbhits 0 hashfull 0 pv a8a3 e2f1 a3e3 f1g2 c8c7 g2h2 e3g5 h2h1 
73577789 <RubiChess 20250719(38): info depth 9 seldepth 13 multipv 1 time 29 score cp 12996 nodes 11058840 nps 377365984 tbhits 0 hashfull 0 pv c8d8 e2f1 a8a6 f1f2 d8e8 f2g3 e8f7 g3h2 a6e2 h2h1 f7f6 
73577809 <RubiChess 20250719(38): info depth 10 seldepth 15 multipv 1 time 51 score cp 12996 nodes 25775031 nps 503277656 tbhits 0 hashfull 0 pv a8g2 e2e3 g2g7 e3e2 g7h7 e2f3 c8c7 f3g2 h7f5 g2h1 f5g5 
73577834 <RubiChess 20250719(38): info depth 11 seldepth 17 multipv 1 time 76 score cp 12996 nodes 45246484 nps 594813517 tbhits 0 hashfull 0 pv a8d5 e2f1 d5h5 f1g1 h5e2 g1h1 e2g4 h1h2 c8c7 h2h1 g4e2 
73577851 <RubiChess 20250719(38): info depth 12 seldepth 19 multipv 1 time 92 score cp 12996 nodes 58601734 nps 632199241 tbhits 0 hashfull 0 pv a8g2 e2e3 g2g3 
73577937 <RubiChess 20250719(38): info depth 13 seldepth 23 multipv 1 time 175 score cp 12996 nodes 126423395 nps 721323845 tbhits 0 hashfull 0 pv a8e4 e2f1 e4e5 f1g2 e5h5 g2f2 c8c7 f2g1 h5f3 g1h2 f3f2 h2h1 f2e2 
73578026 <RubiChess 20250719(38): info depth 14 seldepth 24 multipv 1 time 267 score cp 12996 nodes 204071007 nps 762135302 tbhits 0 hashfull 0 pv a8d5 e2f2 c8d7 f2g1 d7e6 g1f2 d5d2 f2g3 e6f6 g3h3 d2d7 h3g2 d7g7 g2h2 f6f7 h2h1 g7g5 
73578707 <RubiChess 20250719(38): info depth 15 seldepth 28 multipv 1 time 948 score cp 12996 nodes 833022664 nps 878049373 tbhits 0 hashfull 0 pv a8a2 
73580692 <RubiChess 20250719(38): info depth 16 seldepth 31 multipv 1 time 2934 score cp 725 upperbound nodes 2876094434 nps 980201133 tbhits 0 hashfull 0 pv a8e4 
73580692 <RubiChess 20250719(38): bestmove a8e4