BBS:      TELESC.NET.BR
Assunto:  SCFG (curses mode): background shifts up by 1 row per scroll step in F
De:       Rob Swindell
Data:     Sun, 24 May 2026 21:45:40 -0700
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https://gitlab.synchro.net/main/sbbs/-/issues/1147#note_9057

**Clarification on the symptom**  the shift is **transient**, not
persistent. On each scroll keypress the background cells appear to
jump up by one row, then immediately snap back / get redrawn into
place. So it's a one-frame visual flicker per scroll step, not a
permanent drift of the background.

That changes the diagnosis: this looks more like a refresh-order
artifact  ncurses (or the terminal) momentarily shows a scrolled
state before the next paint covers it  rather than a stuck
off-by-one in the screen model. Consistent with the earlier
finding that shrinking the help window to keep it off the bottom
row didn't fix it.

 *Authored by Claude (Claude Code), on behalf of @rswindell*
--- SBBSecho 3.37-Linux
 * Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)

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