[GH-ISSUE #705] Application deadlock with very high CPU usage on pressing the Up key in a blank Table #516

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opened 2026-03-04 01:05:39 +03:00 by kerem · 2 comments

kerem commented

2026-03-04 01:05:39 +03:00

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Originally created by @darkhz on GitHub (Mar 7, 2022).
Original GitHub issue: https://github.com/rivo/tview/issues/705

Please treat this as a critical issue. A pull request has been made, see #706.

When a blank Table is:

Selectable (Table.SetSelectable(true, true))
In Focus, and
the Up key is pressed,

the application immediately deadlocks and incurs extremely high CPU usage.

Here is the code that illustrates the issue

package main

import (
	"github.com/rivo/tview"
)

func main() {
	App := tview.NewApplication()

	Table := tview.NewTable()
	Table.SetBorder(true)
	Table.SetSelectable(true, true)

	TextView := tview.NewTextView().
		SetText("To trigger the application deadlock, press the Up key.")

	Flex := tview.NewFlex().
		AddItem(Table, 0, 1, true).
		AddItem(TextView, 0, 1, false).
		SetDirection(tview.FlexRow)

	if err := App.SetRoot(Flex, true).SetFocus(Table).Run(); err != nil {
		panic(err)
	}
}

Originally created by @darkhz on GitHub (Mar 7, 2022). Original GitHub issue: https://github.com/rivo/tview/issues/705 Please treat this as a critical issue. A pull request has been made, see #706. When a blank Table is: - Selectable (`Table.SetSelectable(true, true)`) - In Focus, and - the Up key is pressed, the application immediately deadlocks and incurs extremely high CPU usage. Here is the code that illustrates the issue ```go package main import ( "github.com/rivo/tview" ) func main() { App := tview.NewApplication() Table := tview.NewTable() Table.SetBorder(true) Table.SetSelectable(true, true) TextView := tview.NewTextView(). SetText("To trigger the application deadlock, press the Up key.") Flex := tview.NewFlex(). AddItem(Table, 0, 1, true). AddItem(TextView, 0, 1, false). SetDirection(tview.FlexRow) if err := App.SetRoot(Flex, true).SetFocus(Table).Run(); err != nil { panic(err) } } ```