Content Picker: impossible to content pick a main_content within the same list: ACL loop detected

Impossible to content pick a main_content in the same ctnlist (so just adding the previous container). This generates some ACL loop such as:

2009-01-14 16:06:44,093: INFO [org.jahia.services.importexport.ImportHandler] - Import starts (fr)
2009-01-14 16:06:44,375: INFO [org.jahia.bin.Jahia] - Processed [/cms/site/demoSite/op/edit/about_us/pid/10] user=[steven] ip=[127.0.0.1] in [16ms]
2009-01-14 16:06:44,750: INFO [org.jahia.services.importexport.ImportHandler] - Imported 5 elements
2009-01-14 16:06:44,750: INFO [org.jahia.services.importexport.ImportHandler] - Import starts (en)
2009-01-14 16:06:44,984: INFO [org.jahia.services.importexport.ImportHandler] - Imported 5 elements
2009-01-14 16:06:45,234: INFO [org.jahia.services.content.automation.RulesListener] - Executing rules for [/demoSite/ContentPage_1/about_us/ContentPage_10/maincontent/ContentContainer_50]
2009-01-14 16:06:45,250: INFO [org.jahia.services.content.automation.RulesListener] - Rules executed for [/demoSite/ContentPage_1/about_us/ContentPage_10/maincontent/ContentContainer_50]
2009-01-14 16:06:45,281: ERROR [org.jahia.hibernate.model.JahiaAcl] - Permission loop detected : [171, 79, 170, 78, 77, 19]
2009-01-14 16:06:45,281: ERROR [org.jahia.hibernate.model.JahiaAcl] - Permission loop detected : [171, 79, 170, 78, 77, 19, 87]
2009-01-14 16:06:45,328: INFO [org.jahia.services.scheduler.BackgroundJob] - Background job (of type pickercopy) ended with status successful executed in 1s
[GC 682456K->590649K(739776K), 0.0358264 secs]
2009-01-14 16:06:47,359: WARN [org.jahia.resourcebundle.JahiaResourceBundle] - Resource [toolbar.itemgroups.page] not found in class java.util.PropertyResourceBundle using locale [fr]
2009-01-14 16:06:47,359: WARN [org.jahia.resourcebundle.JahiaResourceBundle] - Resource [toolbar.itemgroups.page] not found in class java.util.PropertyResourceBundle using locale [fr]
2009-01-14 16:06:47,359: WARN [org.jahia.resourcebundle.JahiaResourceBundle] - Resource [toolbar.itemgroups.page] not found in engine resource bundles using locale [fr]
2009-01-14 16:06:52,187: WARN [org.jahia.resourcebundle.JahiaResourceBundle] - Resource [switchTo] not found in class java.util.PropertyResourceBundle using locale [fr]
2009-01-14 16:06:52,359: ERROR [org.jahia.hibernate.model.JahiaAcl] - Permission loop detected : [171, 79, 170, 78, 77, 19]
2009-01-14 16:06:52,359: ERROR [org.jahia.hibernate.model.JahiaAcl] - Permission loop detected : [171, 79, 170, 78, 77, 19, 87]
2009-01-14 16:06:52,515: INFO [org.jahia.bin.Jahia] - Processed [/cms/site/demoSite/op/edit/about_us/pid/10] user=[steven] ip=[127.0.0.1] in [406ms]
2009-01-14 16:06:54,515: WARN [org.jahia.resourcebundle.JahiaResourceBundle] - Resource [toolbar.itemgroups.page] not found in class java.util.PropertyResourceBundle using locale [fr]
2009-01-14 16:06:54,515: WARN [org.jahia.resourcebundle.JahiaResourceBundle] - Resource [toolbar.itemgroups.page] not found in class java.util.PropertyResourceBundle using locale [fr]
2009-01-14 16:06:54,515: WARN [org.jahia.resourcebundle.JahiaResourceBundle] - Resource [toolbar.itemgroups.page] not found in engine resource bundles using locale [fr]

And then I have nothing displayed on the page (in fact on refresh I have a blank container and on second reload, this one just disappear)