Normal Mode vs Expert Mode

Today I have found something really weird, that I would like to know if anyone knows the reason.
I have a programmatic View Object with a transient attribute rendered as an InputListOfValues. This attribute has a related read-only View Obect which displays the LOV content. A few days ago I disabled the Application Module's pool in order to test the passivation, and since then everytime I opened the LOV, selected a row and clicked on the OK button I got this error:
SQL error during statement preparation. Statement: SELECT SupVendors.VENDOR_CODE, SupVendors.VENDOR_NAME, SupVendorsPerDonorCenter.DONOR_CENTER_ID, SupVendorsPerDonorCenter.ROWID, SupVendorsPerDonorCenter.VENDOR_CODE AS VENDOR_CODE1 FROM SUP_VENDORS SupVendors, SUP_VENDORS_PER_DONOR_CENTER SupVendorsPerDonorCenter WHERE (SupVendors.VENDOR_CODE = :fbkKy__0)
For an unkown reason, when copying the selected row's values to the programmatic VO, ADF replaced the original name of the bind variable in the query for this "fbkKy__0". Plus, the where clause has another condition before the bind variable's one, which does not appear in the error message. I wasn't able to understand why this happened so I checked everything in both programmatic and LOV ViewObjects, but everything was fine. Today I have noticed that the LOV VO had the query in Normal mode (which is OK, or at least it should) and I have switched it to Expert Mode, just to try something different. Well, the fact is that this has automatically solved the problem and now the LOV is working fine again! And if I set it back to Normal Mode, it crashes again.
How can the query's editing mode can have any effect in runtime? I have to suppose this has some relation to the disabled pool and the passivation I am testing, but I cannot figure out why. Does anyone know what's happening?
Thank you in advance!

I have been doing some testing in a dummy application, and I can say this happens with any kind of View Object (it does not need to be programmatic, and the LOV attribute can be entity based) in both forms and tables. The only conditions are to disable the Application Module's pool and that the LOV's query includes a bind variable. Oh, and I forgot to say that I am working with JDeveloper 11.1.1.2.

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