no braille output from input help

Brian Tew

when I press nvda+1 to get input help braille ceases.
Audio continues properly, but I cannot hear it well enough to decipher some of the weirder items.
When I press nvda+1 again braille returns to normal.
Any ideas as to cause or remedy? Thanks.
Using latest nvda and windows 10, braille extender, 64-bit desktop and focus blue 40 5th generation.

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