diff --git a/docs/plans/email-celular-lista-liderancas.md b/docs/plans/email-celular-lista-liderancas.md
index 51210ee0..f4657a48 100644
--- a/docs/plans/email-celular-lista-liderancas.md
+++ b/docs/plans/email-celular-lista-liderancas.md
@@ -9,6 +9,8 @@ Responsável: —
 
 **Nota de revisão (2026-07-26):** entregue como especificado — `CampaignCopyableCell` nasceu compartilhado (`shared/`) já no 2º call site (`AdvisorsTable.tsx` migrado no mesmo PR), `whatsAppHrefForPhone` promovido a `lib/phone.ts`, `LeadershipRowViewModel.email` populado sem query nova, e `loadLeadershipDetail` deduplicado (reusa `row.email` de `toLeadershipRows` em vez de reparsear `doc.contact`). Ordem de colunas final: Nome → E-mail → Celular → Status → Municípios → Organizações → Acesso ao app → Ações (WhatsApp), exatamente como travado abaixo. Gate completo (tsc/lint/format/knip/cycles/test/build) verde; `pnpm exec knip` mantém o erro pré-existente ao carregar `payload.config.ts` (P3, não relacionado); `pnpm test:e2e` reproduziu apenas o flake pré-existente já documentado em `campaignMunicipalities.e2e.spec.ts` (checkbox de consentimento do `LeaderContactsPanel` antes da hidratação) — nenhuma falha nas rotas tocadas por este item.
 
+**Hotfix produção (2026-07-26 noite):** `/campanha/liderancas` 500 em prod — RSC não pode passar `formatDisplay` (função) para o Client Component `CampaignCopyableCell`. API trocada para `displayValue?: string` (formatação no caller); Vercel runtime error: "Functions cannot be passed directly to Client Components". Assessores (`AdvisorsTable`, já `'use client'`) não quebrava, mas foi alinhado.
+
 ## Design (Impeccable)
 
 Âncoras: `PRODUCT.md` (princípios 2 clareza sob pressão, 8 Feel the action; anti spreadsheet) / `DESIGN.md` (register `product`; Field Desk) · tema `data-theme='campaign'` · precedente de interação [`AdvisorsTable.tsx`](../../src/components/campaign/advisor/AdvisorsTable.tsx) (B19 ✓) · shells `CampaignTable` / `CampaignPageShell`.
diff --git a/src/app/(campaign)/campanha/(app)/liderancas/page.tsx b/src/app/(campaign)/campanha/(app)/liderancas/page.tsx
index b4036dd0..55e0083f 100644
--- a/src/app/(campaign)/campanha/(app)/liderancas/page.tsx
+++ b/src/app/(campaign)/campanha/(app)/liderancas/page.tsx
@@ -71,7 +71,7 @@ const leadershipColumns = (
       <CampaignCopyableCell
         value={row.phone}
         label="Celular"
-        formatDisplay={formatBrazilianPhoneInput}
+        displayValue={row.phone ? formatBrazilianPhoneInput(row.phone) : undefined}
         className="tabular-nums"
       />
     ),
diff --git a/src/components/campaign/advisor/AdvisorsTable.tsx b/src/components/campaign/advisor/AdvisorsTable.tsx
index f532cfbb..154a185c 100644
--- a/src/components/campaign/advisor/AdvisorsTable.tsx
+++ b/src/components/campaign/advisor/AdvisorsTable.tsx
@@ -357,7 +357,9 @@ export const AdvisorsTable = ({
                         <CampaignCopyableCell
                           value={row.phone}
                           label="Celular"
-                          formatDisplay={formatBrazilianPhoneInput}
+                          displayValue={
+                            row.phone ? formatBrazilianPhoneInput(row.phone) : undefined
+                          }
                           className="tabular-nums"
                         />
                       )}
diff --git a/src/components/campaign/shared/CampaignCopyableCell.tsx b/src/components/campaign/shared/CampaignCopyableCell.tsx
index 9553f787..70d7b3df 100644
--- a/src/components/campaign/shared/CampaignCopyableCell.tsx
+++ b/src/components/campaign/shared/CampaignCopyableCell.tsx
@@ -22,8 +22,12 @@ type CampaignCopyableCellProps = {
   value: string | null
   /** Used in the toast ("`label` copiado.") and the button's `aria-label`. */
   label: string
-  /** Transforms `value` for display only — the clipboard still gets the raw value (e.g. phone masking). */
-  formatDisplay?: (value: string) => string
+  /**
+   * Preformatted label (e.g. masked phone). Clipboard still gets raw `value`.
+   * String, not a formatter — Client Component; RSC cannot pass functions
+   * (broke `/campanha/liderancas` after B28).
+   */
+  displayValue?: string
   emptyDisplay?: string
   className?: string
 }
@@ -37,7 +41,7 @@ type CampaignCopyableCellProps = {
 export const CampaignCopyableCell = ({
   value,
   label,
-  formatDisplay,
+  displayValue,
   emptyDisplay = '—',
   className,
 }: CampaignCopyableCellProps) => {
@@ -49,8 +53,6 @@ export const CampaignCopyableCell = ({
     )
   }
 
-  const displayValue = formatDisplay ? formatDisplay(value) : value
-
   return (
     <button
       type="button"
@@ -58,7 +60,7 @@ export const CampaignCopyableCell = ({
       aria-label={`Copiar ${label.toLowerCase()}`}
       onClick={() => void copyText(label, value)}
     >
-      <span className="truncate">{displayValue}</span>
+      <span className="truncate">{displayValue ?? value}</span>
     </button>
   )
 }