Both confirmed and fixed in the next build — thanks again, this is genuinely the most useful kind of report. 🙏 And apologies these slipped through: I didn't test thoroughly enough on actual mobile, which is exactly where both of these bite.
1) BIG PLAY cancelling when you scroll to watch the chart: you nailed it. The all-in ride was being closed by any finger-lift, so scrolling up to see the chart sold it — made worse by the button sitting a screen below the chart on mobile. Fixes: (a) starting a BIG PLAY now auto-scrolls the chart into view so you don't have to chase it, and (b) selling still works the same way as a normal trade — release as usual, or tap the chart — but scrolling to watch the chart no longer counts as a sell. Normal hold-to-trade is unchanged.
2) Caching play data: added. The game now autosaves your full run (cash, tier, desks, gear, prestige) every few seconds and on tab-close/navigate-away, and resumes automatically on reload — no more losing an incremental run to a refresh. (The "Reset" button still wipes it on purpose.)