MCP23017 on restart binding problem

my things config looks like:
Thing mcp23017:mcp23017:chipINPUT7 “MCP23017 chip INPUT7” [address=22,bus=1] {
Type input_pin : input#A0 [pull_mode=“PULL_UP”]

Contact contact1 “contact1” (gGenericContacts) {channel=“mcp23017:mcp23017:chipINPUT7:input#A0”}

on load my log:
2019-02-16 11:59:02.890 [.ItemChannelLinkAddedEvent] - Link ‘contact1-mcp23017:mcp23017:chipINPUT7:input#A0’ has been added.

2019-02-16 11:59:03.386 [hingStatusInfoChangedEvent] - ‘mcp23017:mcp23017:chipINPUT7’ changed from UNINITIALIZED to INITIALIZING

2019-02-16 11:59:03.408 [hingStatusInfoChangedEvent] - ‘mcp23017:mcp23017:chipINPUT7’ changed from INITIALIZING to ONLINE

when i try to trigger input - it does not work. if i change the item name in items file of this Contact to some other name i get event in log and everything starts to be working.

2019-02-16 12:00:03.956 [.ItemChannelLinkAddedEvent] - Link ‘contact2000-mcp23017:mcp23017:chipINPUT7:input#A0’ has been added.

2019-02-16 12:00:04.004 [temChannelLinkRemovedEvent] - Link ‘contact1 => mcp23017:mcp23017:chipINPUT7:input#A0’ has been removed.

it seems that if item is reloaded after system loaded problem solves…