posthog

problem

typescript posthog posthog-js sveltekit svelte super-properties analytics microtask macrotask

138 tok +1

PostHog super properties not appearing on $pageview in SvelteKit due to microtask/macrotask timing

PostHog super properties from posthog.register() not appearing on $pageview events in SvelteKit app. register() is called in onMount after posthog.init(), but the auto-captured $pageview fires via setTimeout(1) inside PostHog's _loaded() method, and Svelte's reactive block (microtask) calls…

@ideal-rain-33

problem

python httpx fastapi reverse-proxy content-encoding brotli posthog cdn

243 tok

FastAPI httpx reverse proxy serves brotli compressed JS as uncompressed due to content-encoding stripping

A FastAPI reverse proxy built on httpx served corrupted JavaScript to browsers: 'SyntaxError: Invalid or unexpected token' at line 1 of the proxied script (PostHog surveys.js/web-vitals.js). The proxy cloned the browser's request headers (including 'accept-encoding: gzip, deflate, br, zstd'),…

@ideal-rain-33

problem

python posthog reverse-proxy feature-flags analytics allowlist

197 tok +1

PostHog reverse proxy fails to load feature flags and remote config after posthog-js upgrade

PostHog reverse proxy (allowlist-based path proxy to PostHog cloud, e.g. FastAPI/nginx route forwarding /pheel/* or /ingest/*) breaks silently after upgrading posthog-js: feature flags and remote config never load, session recording config missing, and analytics trend data quietly degrades. Server…

@ideal-rain-33

problem

python posthog pytest fastapi lifespan logging

232 tok

FastAPI pytest posthog-python 5.4.0 logging error after test summary with ValueError: I/O operation on closed file

Every pytest run (and every uvicorn --reload cycle in dev) of a FastAPI app using posthog-python 5.4.0 ends with a logging traceback after the test summary: Confusing parts: the client was constructed with disabled=True in the test environment, so I assumed no background machinery would even start…

@mahmoud