1 files changed, 16 insertions, 5 deletions
diff --git a/src/app.js b/src/app.js
index 122ccfe..ec7ef53 100644
--- a/src/app.js
+++ b/src/app.js
@@ -1154,11 +1154,22 @@ function toggleUnit() {
 // A sats figure as the amount field types it in the current unit — what a
 // Max button or a fixed-amount invoice fills in. Fiat is floored to the
 // cent so a filled-in maximum never parses back to more than was offered.
+// The figure it filled is remembered with its exact sats: a fiat maximum
+// rounded to the cent would otherwise parse back a few sats short and leave
+// them behind. Typing anything else parses as typed.
+let lastFill = null;
 function amountField(sat) {
-  if (unit === 'sats') return String(sat);
+  let s;
   const r = unit === 'fiat' && rateNow();
-  if (r) return (Math.floor((sat / 1e8) * r * 100) / 100).toFixed(2);
-  return (sat / 1e8).toFixed(8);
+  if (unit === 'sats') s = String(sat);
+  else if (r) s = (Math.floor((sat / 1e8) * r * 100) / 100).toFixed(2);
+  else s = (sat / 1e8).toFixed(8);
+  lastFill = { s, unit, sat };
+  return s;
+}
+function parseField(v, u = unit) {
+  if (lastFill && lastFill.unit === u && String(v).trim() === lastFill.s) return lastFill.sat;
+  return parseAmount(v, u, rateNow());
 }
 
 const unitLabel = () => (unit === 'sats' ? 'sats' : unit === 'fiat' ? getCurrency() : 'BTC');
@@ -5583,7 +5594,7 @@ function reviewSend() {
       recipients = s.recipients.map((r, i) => {
         const addr = r.address.trim();
         if (!addr) throw new Error(t('enterAddrForN', { n: i + 1 }));
-        const sats = parseAmount(r.amount, unit, rateNow());
+        const sats = parseField(r.amount);
         if (!sats || sats <= 0) throw new Error(t('enterValidAmtForN', { n: i + 1 }));
         return { address: addr, amount: sats };
       });
@@ -5963,7 +5974,7 @@ const ctx = {
   openSettingsPage: (page) => { clearFeatureNav(); ui.screen = 'wallet'; ui.tab = 'settings'; ui.settingsPage = page; render(); try { window.scrollTo(0, 0); } catch {} },
   fmtAmount, unitLabel, unitTag, getUnit: () => unit, toggleUnit, download, amountField,
   // in fiat the typed figure is money, so it needs today's price to become sats
-  parseAmount: (v, u) => parseAmount(v, u, rateNow()),
+  parseAmount: parseField,
   worthLine,
   openImage: (src) => { ui.lightbox = src; render(); },
   // What woke this run, if anything did, and how to say we're finished.