Bug in Conditional Moves?

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Avatar of kokakola

Recently I tried to enter the conditional move line in an online chess game, and the saved result was as follows:

Saved Line 1:

  IF... THEN...
48. axb4 Kxb4
49. Ka2 Kc4
50. Ka3 Bd1
51. Kb2 Kd4
52. Kc1 Bb3
53. Kd2 Ke4
54. Ke2 Kf4
55. Kf4 Kf4
56. Kf4 Kf4

I tried to enter the conditional moves several times, but similar results showed up in the last moves. Are non-paying members limited to making a conditional move string of only 7 moves or is it a bug?