Radio: FrSky X9D+ (SE, pre-2019)
Software/Firmware: Clean install of OpenTX 2.3.5 (clean wipe of microSD)
copied BF 1.4.1 lua over

Issue:

When I'm in the BF LUA scripts page, pressing +/- would move the selected line forward/backward, but also flip the telemetry page between the BF lua and the OpenTX telemetry pages

This would just be a nuisance except... it also happens when I try to edit values, which kicks me out of edit mode.

Steps to repro:
go to menu page 14 (display)
set up 2 screens:
screen #1 - Scripts -> BF
screen #2 - num

go to top menu, hold page to enter telemetry scripts, then press +/-

Additional isolation:
This does not seem to be an issue with the if-elseif block in ui.lua in line 301~354, as I can comment out the incLine/decLine function calls on button events, and I still observe the telemetry page flips.

I'm not wholly familiar with the OpenTX/LUA, so I'm not sure where to look next. I found the telemtry menu block by looking at the diff of code checkin for #290.

Workarounds:

Can WAR this by only enabling one screen (ie only using Scripts -> BF).