Hi @PolinaVinni I verified this, seems like there is no such issue or limit that it allows only 73 items. I was able to add more than 73 and was able to delete items and view the items properly.  

Hi @Peter_Puzanovs @smacdonald2008 I am facing the similar issue. In my sling model I have adaptable as SlingHttpServletRequest.class and @SlingObject SlingHttpServletRequest request object . but I am getting request as org.apache.sling.scripting.core.impl.helper.OnDemandReaderRequest instead of org...