Again a simple fix. Game worked fine but was missing the text layer.
I know quite well Capcom boards of that era: text graphics are stored in ROM 05. Circuitry is quite simple: one ROM, one RAM and few TTL on buses. I probed the RAM and ROM and found activity were it should be. I pulled the ROM anyway to check it on my programmer:
The chip has probably lost its internal connection to one of the power leg (ground or Vcc). I burnt a new one and text layer reappeared: