1.) The player(s) can break two blocks at the same time, when they only should break one per jump. The fact the player can kill multiple NPCs at the same time in one jump it's perfect, but in this block it shouldn't happen. In SMW and SMBX 1.3 this doesn't too.

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2.) The player won't get always a little bounce after smashing a block, it sometimes just stand:
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3.) If you hit the block in the edges it sometimes won't break:
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4.) Effects are unsyncronized. In SMW and SMB3, the effect of the block are always syncronized, but in SMBX 1.4 this doesn't happen, every block has individual sequence of frames:
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Would be better on this way:
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5.) When player is stand on a position of a block, it will make weird frames:
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6.) Peach's bomb acts weird with these blocks, sometimes the blocks don't seems affected by bombs:
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7.) In SMBX 1.3, when the POW is pushed it will cause these SMW blocks on screen acts like if the player would've hit them, but in SMBX 1.4 it doesn't:
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In SMBX 1.3:
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8.) By last, in SMBX 1.3 when you hit the SMW block it takes 5 seconds on back to the normality, in SMBX 1.4.3 it takes only three seconds, this is a very minor detail, I don't know why I'm even pointing this, anyway it's better keep it as 5 I guess. :P

