Strange issue, double check your content most likely some content issue.

Sling Mapping will work even if Rewriting is disabled in Transformer which is why ur short url is working when u hit in browser, but updating content full urls to short urls will not work in html source. For other project its working, reason might be they have a custom rewriter written in other proj...

They might be using a custom Transformer implemented in other project. You can check that.

Yes Link Checker Transformer is needed to shorten your full pathfield links in html dom. But when you hit a short url urself it will work from domain by sling mapping.

Hi,You can create a OSGI Config and include in ur codebase./apps/my-project/config/org.apache.sling.servlets.resolver.SlingServletResolver.xmlwith ur custom paths under servletresolver.paths

Hi,/crx/packmgr/update.jsp only works with POST, thats why it shows 404 in browser.

Hi,You can check in system console config, for Apache Sling Resource Resolver Factory. Edit that config and see if Mapping Location is set to /etc/map or something else. If its not, point to /etc/map, then after few seconds it should work.

You can add OSGI config based on your run mode to disable. Which can be in source code and will be part of code deployment.

Looks like your using old foundation jsp video component. Which is not working as expected. Try to use a custom component and use below code.<video width="400" controls>  <source src="/content/dam/video/test.mp4" type="video/mp4">  Your browser does not support HTML5 video.</video>I activated video,...

You can increase the statfileslevel to deep level. Then only that page alone will be flushed. And write some custom code(EventListener) to flush the listing page.