American Mah-Jongg (NMJL) bugs megathread

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The following bugs for American Mah-Jongg (NMJL) are known:

• [FIXED] Scoring on self-draws ends up being multiplied by 8 instead of 2 (see Fractional points #114)
• [Supposedly fixed?] Nearest Hands display does not take into account drawn tile (see Nearest Hands display in American Mah-Jongg should take into account drawn tile #119)
• Nearest Hands display does not always suggest possible hands (see Nearest American Hands does not always suggest possible hands #110)
• Nearest Hands display only shows East for hands that are defined with Z for "any wind"
• Nearest Hands display does not always correctly display hands that are defined with 0 (see example in replies)
• Double-pairs and double-pungs are incorrectly evaluated (see Double pair in American (2025 Card, Any Like Numbers #2) possibly incorrectly evaluated as a kong #111)
• Card-Free mod is very broken (see Card-Free American accepts wins with incorrect hands #109)
• [FIXED] Auto-JC button sometimes skips valid calls (haven't properly investigated)
• Some wins aren't recognised (see examples in replies)

The following features for American Mah-Jongg (NMJL) have been requested:

• Nearest Hands and Show Waits displays should also display the score of the hand.
• Additional hand match specifications, to handle other Cards:
  • "A", "P", "K", "Q" for "any tile", "pung", "kong", and "quint" respectively
  • Some way to specify that all tiles in a grouping have the same suit, but we don't care which, and don't want it to interfere with "a", "b", and "c". Possibly use "x" as a catch-all?
  • Some way to specify that all tiles in a grouping may have any suit (including mixing suits within a grouping); possibly by not adding a suit, and treating the entire grouping as singles if this happens.
  • Some way to specify that a tile/grouping is a specific suit; maybe "s", "m", "p" for "souzu", "manzu", "pinzu"?
  • Some way to specify that jokers may or may not be used in a grouping (other than the default "always in pungs/kongs/quints, never anywhere else").
  • Some way to specify that two groupings of numbers use the same number, other than using X0 notation; e.g. "=222a|444a|666a|888a =XXX0b".
  • Some way to specify that two groupings do NOT use the same number, e.g. "!=222a|444a|666a|888a !=222b|444b|666b|888b"
  • Some notation that indicates round wind, seat wind, or perhaps some other way of specifying variables (e.g. with V1, V2, etc.)
  • Some way of indicating that two groupings that are separated by a space in the code are actually part of the same grouping: e.g. "X0a-X1a-X2a-X3a-XX4a XXXX4b XXXX4c". This is because currently, "X0aX1aX2aX3aXX4a" is interpreted as a single grouping of fourteen identical tiles, rather than six tiles of five consecutive values.
• [Partially fixed] A better method of organising the various Card mods (see Better organise American Mah-Jongg Cards instead of having a separate available_mods entry for each #127)
• Additional Cards (currently being held up by the above missing hand match specifications)
• Various features to support the MAHJ-X mod (see Add MAHJ-X mod for NMJL #107)

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Unrecognised wins:

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Hands defined with 0 not parsing correctly (the fourth hand down here is the 75-point hand on the 2025 Card):