The plugin saves the search parameters in the metadata section of the result list object "tx_dlf_list". Thus the search parameters are in fact available on other pages, but the "DLF: Search" plugin ignores them.
To fix the bug, there should be a check for an existing tx_dlf_list object in tx_dlf_search. If this object is available, the search parameters should be taken from its metadata section.
The plugin saves the search parameters in the metadata section of the result list object "tx_dlf_list". Thus the search parameters are in fact available on other pages, but the "DLF: Search" plugin ignores them.
To fix the bug, there should be a check for an existing tx_dlf_list object in tx_dlf_search. If this object is available, the search parameters should be taken from its metadata section.