Apps break Shopify themes on install, no pre-install check
Installing Shopify cart, upsell, and widget apps breaks existing theme features like variants and sliders, with no compatibility check before install
Tier I · Proven The best-established problems.
10 public reports · first reported 6 March 2018 · last reported 11 November 2025
What's going wrong
Shopify merchants installing cart, upsell, cross-sell, and variant-related apps report that their storefront breaks right after install.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 10 reports are about, and how many came each month.
- Related problems.
No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.